I think the descriptive analysis of Mearsheimer (how nation states interact with each other) is pretty good, but I don’t often agree with his prescriptive analysis, which is mostly to maintain US hegemony (but in a more peaceful manner than the liberal foreign policy currently is).
One important detail is that in most countries the far right is the only option if you are against escalating with Russia. Most people in Western Europe are in favor of a peace treaty, and peace was the biggest issue for German voters.
I think part of this shift can be explained by the fact that people are not jumping at the prospect of being send into the meat grinder after the Ukrainians are depleted.