VCs and senior executives are largely hesitant to randomly go hire from any random country, eastern European or not. Unless there is an established city, like say, Bucharest. Most managers don't want to deal with 1 person in each random city. Having an official office in a big EU city is no brainer. It is being done as well.

Unrelated: A friend of mine had a well established Vodka factory in Crimea/Ukraine randomly taken over by some goons. Sometimes people worry, for good reason or not.