There was no war forthcoming between an integrated West and any other power. War is coming because there no longer is a West.
Today people have differing views of nuclear weapons, but people who fought near Japan and survived believe the bomb saved their life.
It's easy to pretend you don't have a sides when there is peace, but in this environment google's going to take a side.
So... when the Russian tanks start rolling on the way to Berlin and Chinese troops are marching along that nice new (old) road they finished fixing up - otw to Europe, so if that happens, which looks possible - you think there will be no West??
If the world is to be divided Europe is the lowest hanging and sweetest fruit.
I think there will still be West even if there is a King in the US demanding fealty to part of it - we are the same as they are, it's ridiculous to pretend we are.
Ideology is one thing, survival of people and culture is another.
Each disintegrated part will of course defend itself in case of war, but other scenarios are possible. For example, the EU could actually move closer towards China for trade.
When the US threatens allies with economic disruption or even an invasion, don't be surprised if those countries make alternative plans and team up with alternative powers.