Not that I in any way condone what Russia has been doing, that’s not exactly right. Ukraine was part of Tsarist Russia before the USSR. However, Ukrainians have the right to self-determination and the right to defend themselves from aggressive neighbours just like anyone else.
“Conservatism consists of exactly one proposition, to wit: There must be in-groups whom the law protects but does not bind, alongside out-groups whom the law binds but does not protect.” Francis Wilhoit