Bitcoin is generally unpopular and unheard of in most countries, including Russia and Ukraine. However, any time there is a war the local currency takes a hit. This is true in every case. It would be wise for Russians and Ukrainians to store their money to something safer (i.e. gold, silver or Bitcoin).

Although, I don't think it will come to war. I could be wrong, but it's not good for either economy and their are better ways to go about it.