The US won't need to go to war as Russia stands down while nothing was given to Russia. In regards to vacating east europe or deny membership to some including weapon deployment to Ukraine nothing was ceded to them including Ukraine. Russia will take a stragetic defeat here and they will pull back
If Russia allows Ukraine to remain in limbo ground - not part of NATO and not under Russian influence like it was prior to 2014, then that isn't necessarily a Russian strategic defeat. Russia's still got the Nord Stream 2 win. It'll be bypassing Ukraine and Russia will be making lots of money from Europe. If it weren't for Germany and France being surprisingly neutral over all this and starting to express divergence from US/UK led European order, becoming more independent of Anglo policy in future is another win for Russia. If it weren't for the NS2 as well, then yeah I'd agree with you. This is US taking the war to Russia's front door.
However Russia invading is something I do not think they want to do unless pushed - overstepping Russian red lines and Ukraine becoming part of NATO or hosting American strategic weapons. The media is hyping all that up as it does and behaves exactly as we expect it to behave. We're not brainwashed western liberals or 70 IQ rednecks. MSM conservative or liberal are two sides of the same dirty coin.
Ukrainians are the victims even more so than Russia. Half duped and fooled by the glossiness and half too afraid to speak up for fear of public violence or at the very least, heavy social disapproval. Western brainwashing is its most powerful weapon (or so we might think sometimes).
Sevastopol is still signed over to Russia until the 2040s. As far as I'm aware, Donbass is held by Russians and Russian friendly Ukrainians. It's a weird one that isn't it. From one perspective Ukrainian sovereignty has been invaded by Russia. Zoom out a bit and you see what and why things have led to here.
There is no question of western meddling. None. This isn't truly a subjugated and mistreated peoples of Ukraine being bullied and enslaved by Russia. The revolutionaries are a reflection on how masterful the west is at aligning those dominoes and performing this sort of stuff everywhere their power and influence is being potentially threatened. Lebanon, Myanmar, Thailand, Ukraine, Hong Kong, Xinjiang, Tibet (long ago they've since sort of given up on that but talk about it every chance they get), Belarus, Kazakhstan, Syria, Turkey, Venezuela. All these in ten years. NEDdy hard at work doing what it does best, creating division, unrest, violence, meddling, inciting and recruiting unstable folks and arming them.