You don’t lol but in all seriousness the only conversation I had about Ukraine at all with family was when my stepdad asked me my feelings on it. I cannot for the life of me remember why he asked me this but what I do recall is bringing up Euromaidan and the Donbas. The conversation was incredibly short as I had to leave right away but I remember it ending with him asking if I thought Putin had legitimate reasons, I said yes and left (I did not leave because of the conversation, I needed to take the dog for a walk because a baby just entered the house and my dog hates young children).

I think the main thing is gauging whether the person is open to even talking about this or not, to my surprise my stepdad did (he and his family are Ukrainian, but I think only his great grandparents were immigrants) and even though we could not continue the discussion he hasn’t acted cold to me at all and still engages in political talk even if I find his opinions misinformed. I could gather from our brief talk that he was open to listening to me and giving background information tends to help understand the conflict a bit more, because surprise surprise a lot of people didn’t know about Euromaidan or the Donbas (I sure didn’t). I wasn’t able to talk about NATO expansion but that would be a good idea as well.

Depending on your situation, avoiding the topic at all might just be your best bet. I never bring up politics ever because of how insane my family can get, so sometimes you have to wait for them to come to you. Knowing your stuff beforehand and relaying that information in a calm and kind manner can go a long way.