I do understand where you are coming from, but they could just as easily have resigned from their contract, by not doing so they are agreeing with what is going on in Ukraine, so my sympathy ends there. You are by your actions compounding the issue.
If an aircrew in NATO was found to be standing by with the knowledge that raping and murder of women and children was going on and continued to support them, I would have the same feelings.
At some point you have to stand up for the rights of the many over the actions of the few.