I definitely expect that the most likely scenario is that the US dumps Ukraine on Europe and focuses on China going forward. This is already kind of hinted by Trump's picks, a lot of whom are China hawks. My prediction is that the downfall in the west is going to be economic as opposed to a big military defeat.

Europe is already in a recession, and things are only looking worse every day. There's absolutely no way to turn that around at this point. Meanwhile, there are big problems brewing in the US economy as well. The US did an amazing job kicking the can down the road so far, but you can only do that for so long and all that means is that the crash is going to be that much bigger when it comes.

The signs are already visible. Credit card and auto delinquencies are at all time high, other defaults on debt like mortgagees are likely not far off. The salaries are not keeping up with the cost of living, so discretionary spending is going down which results in companies rate of profit crashing. The tariffs Trump is promising are only going to make things worse as they drive up prices for the consumers. Once the defaults hit a certain point then we'll see a big debt crisis unfold akin to 2008. The oligarchs like Buffets and Bezos are already pulling money out of stocks in anticipation. While all that's happening, the US is also losing economic war against the BRICS with more and more countries dedollarizing. Even worse, China is now issuing dollar bonds of their own which are directly competing with the US.

The western public is already becoming angry, and a big economic crash is very likely to lead to mass unrest across the western world.