Why on earth would we want to risk turning a small local conflict over a nation that is next door to Russia into World War 3 and the destruction of us all.
And this is the key to trying to keep the West out from helping a country move forward against a aggressive bully. Propaganda and fear, there is no chance in hell of that happening, if there was, there would be badged troops in Ukraine proper. Its a standard child's game, seeing how far he can go before we show some balls.
The biggest embarrassment is the fact that he can supply all the best weapons, troops etc, and we supply MRE's. The funniest thing is the Russians being horrified that we could even contemplate such a thing. Putin must be ROFL.