> From what? There's no serious indication of a russian threat to invade western europe.

The same was said of Ukraine. It made no sense, people thought Putin wouldn't be so self destructive, but here we are.

Given the stakes and consequences of being wrong, Europe is doing the right thing. Even a 5% chance of Putin invading Europe is worth buying an insurance policy for, given that Europe's existing policy has proved worthless.

> All of this is in addition to the reality that peace is more economically productive, and war is just one big murderous disaster.

You make it sound like war is a choice one makes, and that laying down arms, appeasement or surrender is a solution. It's been proved time and again that that just leads to more war.