I think it would be imprudent to adopt a total anti-Russia view. Russia is an aggressor, and no doubt about that, in Crimea, in Eastern Ukraine, in Georgia and in Moldova. Nobody can seriously deny it, and it ought to be more troubling to Europeans than it seems to be (Sweden and Poland possibly excepted)
But one has to remember that before the Ukrainian seizures, Putin expressed his desire to have Russia join NATO. Possibly that was a subterfuge to undermine the alliance, but possibly not. The day will come when China’s piecemeal and de facto occupation of the Russian Far East may become overt and directly political. Putin might have been serious.
One is reminded of something Lyndon Johnson said when people asked him why he didn’t fire McNamara. He said (paraphrasing) he would rather have McNamara inside the tent p-----g (urinating) out than outside the tent p-----g (urinating) in. So who knows?
Letting the Russkies know somebody is fixing to blow up one of their cathedrals is something we should do, notwithstanding we rightly think Putin is a Mafioso. We might get a return favor or two, and seemingly have, at least on that level. There might be more things like that of which we know nothing.