Is Membership of Nato Necessary for States in Central and Eastern Europe?

I don't know what the status of trans nistria is, i think they have tem russian garrisons there. One of the things that we can do as ta european union is fast track admission to the Euro Union of ukraine and maldova. But it is a threat to the established order. It is intended to restore to russia a territory, shall we say, that they had to concede when the soviet union collapsed. Is there any reason why he shouldn't go to muldover, for example? And what would we do cause maldova? If i understand correctly, is not a member of nato, but it is a