1. The notion since the Trump administration that tactical nukes can be used against China in case of an AR
I haven't heard of this. When I tried to look this up,
shows up that goes against this idea. There's also
which shows the Trump Admin threatening countries with nukes. China is not listed at all.
2. Urging by a US general that the US should include Taiwan under its nuclear umbrella some months ago
Can you give me a direct quote from a U.S. general stating that Taiwan would be under the U.S. nuclear umbrella?
The only thing I could find related to this is the
(U.S. foreign policy thinktank) stating:
"Clarify the US commitment to defend Taiwan, including whether the US nuclear umbrella extends over Taiwan."
3. Increasing numbers in Washington DC who are seeing that it is possible for the US to win a nuclear war against China, and that the US should do so using Taiwan as a casus belli in order to crush and destroy China.
Again source? Also again, is an actual person in DC stating this or is it some thinktank.
There is also the fact where Taiwan has been hosting US nukes as well during the First Cold War. It wasn't until 1972 when Nixon ordered the removal of American nukes from Taiwan in order to establish diplomatic relations with the PRC.
Do you really think the U.S. can just sneak nukes into Taiwan without China knowing?
Anyway, you haven't given me a reason why you think ASEAN countries will host U.S. nukes beyond fearmongering.
Even one neighboring country hosting these sorts of weapons is a massive provocation. If it wasn't, why Cuban missile crisis?
The only countries in East Pacific under the U.S. nuclear umbrella to my knowledge is South Korea and Japan. Even though, I think SK and Japan don't have actual U.S. nukes on their soil. So it's a little different from the Cuban missile crisis where they were actual Soviet nukes on Cuba.