Couldn't agree more---let me point out that our (i.e. the German) government started sanctions along with the rest of most (all?) European countries. It's not our choice any more---my dad used to believe in the 'Ostpolitik' of Willy Brandt, and he's heartbroken to hear about the horrors of war :(

(my research institution has also put a stop on all projects involving Russian collaborators at the moment; on the one hand, I can understand this reaction, on the other hand, it creates even more problems and, as you say, does not distinguish between those responsible for the conflict and those who are not. This is not really not an easy space to navigate.)