A lot of comments look at this from a political/party point of view, which is understandable. But could this also be looked at from a group survival point of view?

Let's look at Ukraine right now. In the short-term a deal with Russia might ease the pain of Ukrainians which are troubled by the harsh winter, but by "harming" themselves right now, they might survive better in the long run?

Edit: I didn't want to start a political discussion about the war, just ask whether this behaviour might be evolutionary beneficially from a group survival point of view. Since war has been part of human history.