Can a Single Conversation Shake the World?

My Spanish teacher asked me something the other day that I haven't been able to shake. Is it true, she said, that Europe doesn't want Russians anymore? Something stirred inside me. A rush of thoughts, tangled and contradictory, all arriving at once. She's not wrong. Many European countries have, in one way or another, closed their doors to Russian citizens. It's a kind of collective embargo — one…