My company is in a similar situation - have large teams in several eastern European cities (primarily Minsk), and a few long-term remote teammates in Ukraine. A couple have fled (from Kyiv) with children, others are worried about being conscripted. It makes me want to vomit just thinking about it. I'm amazed many of them are still on Slack and making PRs.

We're fortunate some of our leadership has quite close ties to the area, so our company's response so far has been extremely understanding.