I mean that's really the setup.
1. Get America to move towards a more isolationist setup / unwilling to help Europe or Taiwan. This is already in motion politically and via social media operations.
2. Get America stuck in a conflict with Iran. This is ramping up.
3. China takes Taiwan. Probably in the next 2-5 years.
4. Russia takes the Baltics and starts to carve further into Europe.
My further total crackpot theory on all of this is that most of this has been agreed upon by all the major powers involved.
1. Russia gets to claim over Europe in the future.
2. China gets Taiwan and control of Africa + APAC.
3. US gets control of North America and South America. This culminates in the annexation of Greenland once Russia takes Europe. This is the agreed upon transaction for America to back out of Russo-European affairs and China-Taiwan affairs. Canada and Mexico eventually are also merged into the US unwillingly but without any major allies left there isn't much to prevent it.