PLA Strategy in a Taiwan Contingency

manqiangrexue

Brigadier
Much faster? How so? When you say "in the middle of the night", do you somehow mean that the redeployment of hundreds of thousands of troops, tens of thousands of vehicles, thousands of aircraft, and hundreds of ships, would somehow be accomplished by the morning??? Because if so we have nothing further to discuss LOL. Let's not even get into the civilian transports that would have to be summoned from all around the world where they would be currently operating in their civilian roles. The US has a 60/40 Pacific presence already, and even calling for reinforcements from the Atlantic theater is only a few weeks sail. You also forget the time it would actually take to secure the victory after the invasion starts, which I'm assuming you don't think will only take a few days like the fanbois here think.
The deployment of critical assets within the country is going to be much faster than a few weeks. At no point would China want to bring all of its military equipment and personel to the conflict zone. Troops can be transported across the country like normal people; they don't all need to be packed into military vehicles. Trains can be stopped for civilian use and all be used to transport PLA. A huge amount can be done in one night, and with the heavy equipment that is already around Taiwan, the invasion can start quite soon, with more and more forces pouring in.

The most critical phase of the conflict is the opening where missile salvos should take out the majority of the ROC defenses. Assets like aircraft to close off and control the airspace and environnment below move very quickly to the conflict zone. The fiercest part of the fight does not see boots on the ground; the missiles and planes that do this are never too far from ready. The majority of the transport that needs to happen is the landing fleet, which will move in the time that the airforce and rocket force are doing thier jobs. This is much faster than the US sailing from around the world. And while I assume it will take more than a few days, it's because the nature of a land invasion but that is to simply cement the control that your heavy machinery has already won. I don't expect that intense fighting from the onset to last long at all; the ROC doesn't even have enough targets for the PLA to kill.
Only SM-3 is midcourse; I have deliberately left that missile out because AFAIK the Chinese hypersonics are not exo-atmospheric. THAAD and SM-6 are both terminal phase interceptors.
The low altitude makes the missile more difficult to track and engage reduces the time between detection and impact. I did a little googling so I revised what I wrote, but it seems to be after you responded. From what I believe, the vehicle exiting mid-course phase and entering terminal phase still needs to speed up to mach 25 and I question if THAAD/SM6 are designed to catch it before it reaches that speed or to actually catch it at that speed. The revision is below:

"Were they made into intercept ICBMs when they actually reach mach 25, or prior to that when they are speeding up? As far as I know, once an ICBM reaches that speed, there is no catching it. And I do believe that interception of a ballistic object at mach 9 is much harder than intercepting one on a predicatble trajectory at mach 25 because interception depends on prediction rather than actively chasing down its speed. If you can compute fast enough where something will be, even if it's at mach 25, you can meet it there. If you can't, you are left with nothing but trying to chase down an object moving at mach 9."
The other problem is that the HGV has no defensive measures at all and only relies on an unpredictable trajectory to escape defeat. Meanwhile the prosecution of an HGV attack on a ship involves multiple targeting intermediaries all of which have to work and work together without a hitch, and every point in that kill chain is susceptible to destruction or disruption.
I've heard that kill chain is also built with many redundancies and HGVs like DF-ZF are far less reliant and more autonomous than previous generation ones.
And in the terminal phase the HGV will absolutely face various countermeasures from jamming to spoofing to kinetic defenses, etc. BTW, when we saying maneuvering we mean that an HGV has a random non-ballistic flight profile, not that it can turn on a dime or constantly does zigzag runs to shake off an attacker. How fast a turn can a Mach 9 missile actually make anyway? These HGVs are simply flying intra-atmospheric non-ballistic routes that are non-traditional to the ballistic warheads that traditional air defenses have faced. They're not some kind of nimble missile-dodging ninja missiles, and should not be viewed as such. So the difference is far from some kind of surreal NBA vs high school basketball game.
The fact that it is flying in a ballistic patten, even one that is predetemined, means that the primary means of interception, which is predicting its location to meet it, is unusable.

And this, once again, goes back to the numbers game. How many of these missiles do they think they can fend off before one connects and they lose a carrier, with all the jets and people on board? Those are the stakes that the USN will be betting with. Are they confident enough to make that bet?
The "quadpack designation" is not a "question mark". The UVLS is undeniably quad-packable. By the FM-3000N. Period. There is no evidence that any other missile is quadpackable inside the UVLS, including any of the missiles currently in use by the PLAN, which means any other missile in current PLAN use occupies a UVLS cell that is in all respects identical to exactly 1.0 of a Mk 41 VLS cell.
OK so it's a combo of quad-packed and non-quad-packed. I figured that but it obfuscates a direct VLS comparison.
Yes, though even when the PLAN chooses to exercise the "extra volume" option the overwhelming majority of UVLS cells will still be occupied by less-than-fullbore single occupancy missiles like the HHQ-9, the YJ-18, the CY-5, and the CJ-10 (or whatever). So, back to the original point, a straight up comparison of VLS counts between the Chinese and American navies remains a valid metric for general estimations of naval strength.
Well, that comparison still would need to be done with the forces in the area (China's navy is much more in Asia than the US) and the fact that the conflict zone is within range of the PLARF.

What is your thesis on this? What do you believe will happen if China decides to reunite the ROC by force now or close to now? Are you simply saying that it won't be so straight-forward and cost-free for China to win, or that today, it cannot win? I don't think this fundamental question is clear.
 
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latenlazy

Brigadier
Oh look at you juking and jiving like the dishonest troll you are. You went from "salvoes" to "defensive missiles" to "defensive missile salvoes" to now "defensive launchers". Well defensive launchers are NOT the same thing as "defensive missiles" or even "defensive missile salvoes" especially when you have missiles like SM-3 in the mix which cannot contribute to any "salvoes" against anything other than extra-atmospheric targets and the ESSM which is quad-packed in classified numbers on every ship. BTW, I don't know if you know this, but there is not even such a thing as a "defensive launcher" in the first place. ROFLMAO STUPID. And also BTW, when you talk about "locally sustainable assets", do you know what that alleged quantity is for any navy? You use this term as stupidly and flippantly as you would talk about "locally sustainable garden produce" and yet it is most definitively classified how many assets of various types the Pacific theater can sustain both in peacetime and in wartime. Why in the hell would anyone in the military reveal this kind of information to the public? If it's somehow NOT classified as you claim, then surely you know the answer. I don't, but maybe you can impart some magnanimity and share your bullshit knowledge with us all. Go ahead, I'll wait to hear the mana drop from your mouth. Hahahahahaha
A whole lot of non sequitur words and helpless invectives just to run away from a question that asked for some basic numbers, *numbers even crappy think tank reports do the bare minimum of trying to cover* smdh. You want to be taken seriously while doing just about everything you can to make excuses for why you’re unable to answer actual serious questions.

Hiding behind “it’s classified” looks fatuous when all the other things you like to pretend you’re knowledgeable about (like how effectively the US can intercept hypersonic missiles) are even more “classified”. You didn’t seem to have any trouble counting VLSes earlier but now you’re rage stuttering like you have a brain impediment when you’re asked for some straightforward numbers. It’s almost like you didn’t seem to understand why my answer to your “lol PLAN has fewer VLS” was “PLAN+PLARF+PLAAF”. How did you go from “lol the USN has more launchers than the PLAN” to “nooo can’t answer questions about launcher counts that’s *classified*”. What was that “ROFLMAO stupid” again? You’re truly displaying some room temp IQ here buddy.

You can shriek at me all you want but we all can see what an incoherent clown you are. Keep shrieking though it’s *great* entertainment while the news cycle is slow.

This (Iron) man will go to great lengths to look like a fraud in the service of trying to not look like a fraud :)
 
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Iron Man

Major
Registered Member
The deployment of critical assets within the country is going to be much faster than a few weeks. At no point would China want to bring all of its military equipment and personel to the conflict zone. Troops can be transported across the country like normal people; they don't all need to be packed into military vehicles. Trains can be stopped for civilian use and all be used to transport PLA. A huge amount can be done in one night, and with the heavy equipment that is already around Taiwan, the invasion can start quite soon, with more and more forces pouring in.
What's a "huge amount"? Can you quantify? Neither of us know for sure, we're both just guessing, but my personal guess is far closer to "weeks" than to "overnight". We'll just have to agree to disagree on this.

The most critical phase of the conflict is the opening where missile salvos should take out the majority of the ROC defenses. Assets like aircraft to close off and control the airspace and environnment below move very quickly to the conflict zone. The fiercest part of the fight does not see boots on the ground; the missiles and planes that do this are never too far from ready. The majority of the transport that needs to happen is the landing fleet, which will move in the time that the airforce and rocket force are doing thier jobs. This is much faster than the US sailing from around the world. And while I assume it will take more than a few days, it's because the nature of a land invasion but that is to simply cement the control that your heavy machinery has already won. I don't expect that intense fighting from the onset to last long at all; the ROC doesn't even have enough targets for the PLA to kill.
Regardless of the speed of the missile and aerial operations prior to boots on the ground, the diversion of civilian shipping assets to the coastal provinces remains a limiting factor, and I have no idea why you think that they will somehow "much faster" than the USN sailing from around the world, since they themselves will be sailing in from around the world as well. That will take weeks, during which time the US will see it happening in real time.

I did a little googling so I revised what I wrote, but it seems to be after you responded. From what I believe, the vehicle exiting mid-course phase and entering terminal phase still needs to speed up to mach 25 and I question if THAAD/SM6 are designed to catch it before it reaches that speed or to actually catch it at that speed. The revision is below:

"Were they made into intercept ICBMs when they actually reach mach 25, or prior to that when they are speeding up? As far as I know, once an ICBM reaches that speed, there is no catching it. And I do believe that interception of a ballistic object at mach 9 is much harder than intercepting one on a predicatble trajectory at mach 25 because interception depends on prediction rather than actively chasing down its speed. If you can compute fast enough where something will be, even if it's at mach 25, you can meet it there. If you can't, you are left with nothing but trying to chase down an object moving at mach 9."
No, warheads slow down when they reenter the atmosphere; they do not speed up. In fact this is one of the ways that is used to differentiate warheads from decoys; warheads tend to slow down at a lower rate than decoys, which generally makes decoys useless in the terminal (atmospheric) phase.

I've heard that kill chain is also built with many redundancies and HGVs like DF-ZF are far less reliant and more autonomous than previous generation ones.
I've not heard that, but even if the redundancy claim is true it doesn't attack-proof the kill chain or make the HGV itself immune to countermeasures, evasive maneuvers, and kinetic defenses.

The fact that it is flying in a ballistic patten, even one that is predetemined, means that the primary means of interception, which is predicting its location to meet it, is unusable.

And this, once again, goes back to the numbers game. How many of these missiles do they think they can fend off before one connects and they lose a carrier, with all the jets and people on board? Those are the stakes that the USN will be betting with. Are they confident enough to make that bet?
I have no idea if they are confident enough to make that bet. If China goes all in in 2027 or 2028 and Trump just sits back and mouths off without also going all in, that may possibly represent the answer to that question.

OK so it's a combo of quad-packed and non-quad-packed. I figured that but it obfuscates a direct VLS comparison.
No it doesn't. It just means it's at most a wash because the ESSM is also quad-packed.

Well, that comparison still would need to be done with the forces in the area (China's navy is much more in Asia than the US) and the fact that the conflict zone is within range of the PLARF.
Again, the conflict zone is the world because nothing limits Atlantic theater assets from being redeployed to the Pacific Theater either in advance or in the course of the conflict.

What is your thesis on this? What do you believe will happen if China decides to reunite the ROC by force now or close to now? I don't think this fundamental question is clear.
Why is my thesis on the probability of a successful AR even relevant to this debate? My personal amateur opinion is that the PLA is close to be able to successfully invade Taiwan, with or without intervention by the US/Japan, maybe within the next few years. The appearance of the new landing barges to me is an unambiguous sign of both the Chinese military's readiness or near readiness and China's intentions wrt settling the Taiwan question. It's pretty much like the last thing you build before you actually go and invade.

A whole lot of non sequitur words and helpless invectives just to run away from a question that asked for some basic numbers, *numbers even crappy think tank reports do the bare minimum of trying to cover* smdh. You want to be taken seriously while doing just about everything you can to make excuses for why you’re unable to answer actual serious questions. Hiding behind “it’s classified” looks fatuous when all the other things you like to pretend you’re knowledgeable about (like how effectively the US can intercept hypersonic missiles) are even more “classified”. You didn’t seem to have any trouble counting VLSes earlier but now you’re stuttering when you’re asked for some straightforward numbers like you have a brain impediment. You can shriek at me all you want but we all can see what an incoherent clown you are. Keep shrieking though it’s *great* entertainment while the news cycle is slow.

This (Iron) man will go to great lengths to look like a fraud in the service of trying to not look like a fraud :)
Wait wait wait, so I said it's classified I don't know, you said it's NOT classified but you still can't produce jack schitt. Got it. BTW, can you define for me what a "defensive launcher" is? Please, educate me because I'm dying to know. Is this an actual technical or military term? Surely it's not a term you just pulled out of your ass in your desperation because you were losing an argument and had to try and move the goal posts for the nth time? Say it ain't so. :)
 

latenlazy

Brigadier
.

Wait wait wait, so I said it's classified I don't know, you said it's NOT classified but you still can't produce jack schitt. Got it. BTW, can you define for me what a "defensive launcher" is? Please, educate me because I'm dying to know. Is this an actual technical or military term? Surely it's not a term you just pulled out of your ass in your desperation because you were losing an argument and had to try and move the goal posts for the nth time? Say it ain't so. :)

“You didn’t seem to have any trouble counting VLSes earlier but now you’re rage stuttering like you have a brain impediment when you’re asked for some straightforward numbers. It’s almost like you didn’t seem to understand why my answer to your “lol PLAN has fewer VLS” was “PLAN+PLARF+PLAAF”. How did you go from “lol the USN has more launchers than the PLAN” to “nooo can’t answer questions about launcher counts that’s *classified*”.”

Once again trying to word spam your way out of admitting your own incoherence. We all see you, fraud :)
 

Iron Man

Major
Registered Member
“You didn’t seem to have any trouble counting VLSes earlier but now you’re rage stuttering like you have a brain impediment when you’re asked for some straightforward numbers. It’s almost like you didn’t seem to understand why my answer to your “lol PLAN has fewer VLS” was “PLAN+PLARF+PLAAF”. How did you go from “lol the USN has more launchers than the PLAN” to “nooo can’t answer questions about launcher counts that’s *classified*”.”

Once again trying to word spam your way out of admitting your own incoherence. We all see you, fraud :)
The VLS count of an entire military isn't actually the same thing as "how many assets can the Pacific theater sustain in peacetime vs wartime"; you don't understand this either because your brain isn't built that way, or because you simply refuse to understand to escape inevitable defeat in a thread. It's also not the same thing as "salvoes around China", "defensive missiles around China" or "defensive launchers around China".

Your problem is that you don't actually define what you mean when you use your variable non-military ass-pulled terminology, like "defensive launchers". What are those, exactly? Is that VLS? Or ships? If you are actually trying to spindoctor it as VLS then the answer I gave you was that the types and numbers of missiles that get put into any ship's VLS cells is classified; no one will ever tell you how many SM-6s, SM-2s, ESSM, and SM-3 are loaded in any ship, and therefore the total number of defensive salvoes or defensive missiles or defensive launchers or whatever other garbage terminology you want to invent, is a black box.

If you are actually trying to spindoctor it as ships, the sustainment capabilities of every US naval base in the WestPac is also classified because no military leader in their right mind will ever share with you how many carriers, destroyers, and subs any given base can logistically support at once, or over a given period of time. You stupidly claimed this knowledge was NOT classified; so AGAIN, I invite you to educate everyone on the unclassified knowledge of US naval base sustainment capabilities in the WestPac. Do it already. Or sit your ass down. :)
 

tokenanalyst

Brigadier
Registered Member
You laughably believe that China has "launchers" that are "unreachable" from the US military, but have failed to remember that B-2s and soon B-21s are literally designed to penetrate advanced air defense networks to literally reach exactly those kinds of launchers.
I dont think those will last long. One the advantage of doing stealth research is that you get to learn the offense AND the defense.
 

manqiangrexue

Brigadier
What's a "huge amount"? Can you quantify? Neither of us know for sure, we're both just guessing, but my personal guess is far closer to "weeks" than to "overnight". We'll just have to agree to disagree on this.
It's a general sense that with first mover advantage, China can get significant forces in its own country near Taiwan much faster than the US can get all its power from around the world. And I definitely don't think that China can get all of its ground invasion force assembled across the strait in one night but I do think they can get enough the the air force, navy and rocket force in action in under a night to overwhelm the ROC and collapse their defenses so that within a day, the biggest question to the US would be whether there's any point in getting there anymore. And the answer should tilt more to the no by the hour.
Regardless of the speed of the missile and aerial operations prior to boots on the ground, the diversion of civilian shipping assets to the coastal provinces remains a limiting factor, and I have no idea why you think that they will somehow "much faster" than the USN sailing from around the world, since they themselves will be sailing in from around the world as well. That will take weeks, during which time the US will see it happening in real time.
What do you think China needs to call from around the world? What does China not have within China to pull this invasion off?
No, warheads slow down when they reenter the atmosphere; they do not speed up. In fact this is one of the ways that is used to differentiate warheads from decoys; warheads tend to slow down at a lower rate than decoys, which generally makes decoys useless in the terminal (atmospheric) phase.
Wait, what? You're saying that terminal phase is slower than mid-course? This is what Google AI gave me. I also thought that the max speed is reached just before impact in terminal phase.
"During the midcourse phase of an ICBM's flight, the missile travels at speeds of around 15,000 mph (24,000 km/h), while in the terminal phase (re-entry), speeds can reach over 18,000 mph (29,000 km/h). "
I've not heard that, but even if the redundancy claim is true it doesn't attack-proof the kill chain or make the HGV itself immune to countermeasures, evasive maneuvers, and kinetic defenses.
Nothing's completely immune but it's a game of who can kill what and who can field what and how sure the US can be (Have all the redundancies been cleared? Can they put something in the air to patch it up and reactivate their kill chain when your ships are all in missile range? Are you sure that's enough to prevent their missiles from hitting?) before they think they want to wager their carriers against Chinese missiles.
I have no idea if they are confident enough to make that bet. If China goes all in in 2027 or 2028 and Trump just sits back and mouths off without also going all in, that may possibly represent the answer to that question.
That's kinda duh, of course. But the fact that any sino-US conflict leans further towards China by the day and the US has not attempted to start a war, shows me that they are not at all confident enough to wager their aircraft carriers and the symbol of American imperialism against China's HGVs and killchain. And of course Pete Hegseth said that the Pentagon has projected the US losing against China for over 10 years now with Chinese missiles taking out all of America's carriers in minutes.
No it doesn't. It just means it's at most a wash because the ESSM is also quad-packed.
OK, didn't know that.
Again, the conflict zone is the world because nothing limits Atlantic theater assets from being redeployed to the Pacific Theater either in advance or in the course of the conflict.
We've spent a good part of this conversation discussing the dangers and reaction speeds that would limit the utility of this. And the conflict zone is the area surrounding Taiwan. It's not the world just because the US has its assets strewn all about.
Why is my thesis on the probability of a successful AR even relevant to this debate? My personal amateur opinion is that the PLA is close to be able to successfully invade Taiwan, with or without intervention by the US/Japan, maybe within the next few years. The appearance of the new landing barges to me is an unambiguous sign of both the Chinese military's readiness or near readiness and China's intentions wrt settling the Taiwan question. It's pretty much like the last thing you build before you actually go and invade.
Well I think everyone knows that but the question is whether, with all you wrote, you think that China can pull this off today or within this year if they tried. Whether they could do it, do it at great cost, or fail to do with with great cost to the US as they prevent the invasion?
 

latenlazy

Brigadier
The VLS count of an entire military isn't actually the same thing as "how many assets can the Pacific theater sustain in peacetime vs wartime"; you don't understand this either because your brain isn't built that way, or because you simply refuse to understand to escape inevitable defeat in a thread. It's also not the same thing as "salvoes around China", "defensive missiles around China" or "defensive launchers around China".
The whole point of “how many assets can the Pacific theater sustain” is about VLS counts. *THAT’S WHY* you have to count launchers. Fires is fires is fires. If you can’t support enough salvos to defend against saturation attacks nothing else matters. Such *basic* first principles seem to be beyond your rudimentary cognitive abilities though, it seems.


Your problem is that you don't actually define what you mean when you use your variable non-military ass-pulled terminology, like "defensive launchers". What are those, exactly? Is that VLS? Or ships? If you are actually trying to spindoctor it as VLS then the answer I gave you was that the types and numbers of missiles that get put into any ship's VLS cells is classified; no one will ever tell you how many SM-6s, SM-2s, ESSM, and SM-3 are loaded in any ship, and therefore the total number of defensive salvoes or defensive missiles or defensive launchers or whatever other garbage terminology you want to invent, is a black box.
Your problem is you are so fundamentally clueless about basics that you try to deflect from basic straightforward questions like “how many launchers does the USN have vs the PLAN *PLUS* PLARF *PLUS* PLAAF” with meaningless terminology spamming. Answering straightforward questions with convoluted word slop is not the mark of intelligence you think it is.

You went from grandstanding “USN has more launchers than the PLAN” to absolutely refusing to answer “what about the PLAN+PLARF+PLAAF”, preferring to put up a day’s worth of buffoonish sideshows over addressing a question about numbers *directly* with numbers, *a contention you started*. We can *all* see what that’s about, and it ain’t anything intelligent or substantive. Your dishonest clown act is nakedly transparent :D

If you are actually trying to spindoctor it as ships, the sustainment capabilities of every US naval base in the WestPac is also classified because no military leader in their right mind will ever share with you how many carriers, destroyers, and subs any given base can logistically support at once, or over a given period of time. You stupidly claimed this knowledge was NOT classified; so AGAIN, I invite you to educate everyone on the unclassified knowledge of US naval base sustainment capabilities in the WestPac. Do it already. Or sit your ass down. :)
Only spin doctor here is you ;)
It’s not classified to look at how many assets can be supported at each base dummy. This is basic OSINT. If you need someone to educate you on that sort of thing you aren’t qualified to have opinions about these topics. You can do the work yourself if you’re all that Mr. I can’t decide if I can or can’t count VLS because it may or may not be classified. But nah, we know you’re just a fraud with a big mouth. Take a seat squib :)
 
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latenlazy

Brigadier
No it doesn't. It just means it's at most a wash because the ESSM is also quad-packed.

OK, didn't know that.
Fwiw I have it on pretty good authority that the ESSM is mostly worthless in China contingencies. For a number of reasons that come down to effective engagement window (seeker size, energy) the pK isn’t good against more advanced threats.
 

Iron Man

Major
Registered Member
It's a general sense that with first mover advantage, China can get significant forces in its own country near Taiwan much faster than the US can get all its power from around the world. And I definitely don't think that China can get all of its ground invasion force assembled across the strait in one night but I do think they can get enough the the air force, navy and rocket force in action in under a night to overwhelm the ROC and collapse their defenses so that within a day, the biggest question to the US would be whether there's any point in getting there anymore. And the answer should tilt more to the no by the hour.
Collapsing Taiwan's air defenses certainly can be accomplished quickly, within a few days to a week I would imagine. That is not the limiting factor, however. Getting boots on the ground is the limiting factor, and is what will take weeks before it can even start. Even if you can magically teleport all the troops and vehicles from the rest of China over to Fujian in one instant, there remains the massive logistical barriers in getting them over to land on and occupy the island. This is actually the timeframe during which the US and Japan will decide whether to intervene. IMO the calculus will not depend the destruction of Taiwan's air defenses; it depends on fast the Chinese military can get over the strait and how fast the Chinese military can defeat the reminder of Taiwanese defenses. If one or both are taking too long or are not going well, the calculus for the US may change. Or, the US may have already decided to militarily intervene regardless. Or not. In any case it will take weeks to prepare transportation from around the world, days to land forces, and weeks to occupy the entirety (or at least the bulk) of the island.

What do you think China needs to call from around the world? What does China not have within China to pull this invasion off?
The ro-ros and other civilian transports. They are not built as military transports (even though they ARE built to military specs), and they have regular lives doing regular civilian things, including civilian things all around the world. China will absolutely need these transports to complete an invasion. Its amphibious forces will form the point of the spear of an invasion but they are not numerous enough to defeat the entire Taiwanese military or militarily occupy the island after the Taiwanese military is defeated. That's in fact the entire point of the landing barges being built lately, barges which will be used to connect the military contents of the ro-ros to the shores of Taiwan.

Wait, what? You're saying that terminal phase is slower than mid-course? This is what Google AI gave me. I also thought that the max speed is reached just before impact in terminal phase.
"During the midcourse phase of an ICBM's flight, the missile travels at speeds of around 15,000 mph (24,000 km/h), while in the terminal phase (re-entry), speeds can reach over 18,000 mph (29,000 km/h). "
Google AI is wrong.

"Ballistic missiles have three stages of flight: Boost Phase begins at launch and lasts until the rocket engine(s) stops firing and the missile begins unpowered flight. Depending on the missile, boost phase can last three to five minutes. Most of this phase takes place in the atmosphere. Midcourse Phase begins after the rocket(s) stops firing. The missile continues to ascend toward the highest point in its trajectory, and then begins to descend toward Earth. This is the longest phase of a missile’s flight; for ICBMs, it can last around 20 minutes. During midcourse phase, ICBMs can travel around 24,000 kilometers per hour (15,000 miles per hour). Terminal Phase begins when the detached warhead(s) reenter the Earth’s atmosphere and ends upon impact or detonation. During this phase, which can last for less than a minute, strategic warheads can be traveling at speeds greater than 3,200 kilometers per hour (1,988 miles per hour)."

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"In the terminal layer, the atmosphere helps the defense discriminate because atmospheric drag would decelerate heavy RVs less than their accompanying lighter penetration aids. The key technical challenges for endoatmospheric interceptors are accommodating the severe heating caused by friction with the atmosphere and achieving a high degree of maneuverability. Terminal defense could benefit from the easier discrimination of RVs from decoys by atmospheric slowdown, but only, at the expense of requiring a more complicated interceptor that could withstand the heating and mechanical stress caused by operating in the upper atmosphere. Midcourse interceptors are inherently simpler and could be used much more flexibly throughout the long midcourse portion of the RVs' flight trajectory. However, the defense must have confidence in its ability to discriminate RVs in midcourse in the expected threat environment."

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“Terminal defense intercept” refers to endoatmospheric intercept after the midcourse defense opportunity. The presence of substantial dynamic forces make this phase unique as far as ballistic missile defense is concerned because light objects such as decoys, which slow down faster due to atmospheric drag, follow substantially different trajectories than heavy objects such as reentry vehicles.
National Academies of Sciences, Engineering, and Medicine. 2012. Making Sense of Ballistic Missile Defense: An Assessment of Concepts and Systems for U.S. Boost-Phase Missile Defense in Comparison to Other Alternatives. Washington, DC: The National Academies Press.
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