You are arguing against something I never said.Since, according to you, appeasement won't work, the only logical alternative is war to force Russia out of Ukraine.
A few questions:
-Should the US be involved in this war?
-If so, how many American troops dying in Ukraine is acceptable?
-If not, how many NATO troops dying defending Ukraine is acceptable? (Reminder: they're not part of NATO)
-Since war is the only option to stop the next Hitler, have you enlisted to defend Ukraine?
-Are you OK with your sons/daughters dying to defend Ukraine?
It's not an either/or thing. You make it as hard as you possibly can on Russia without being directly involved. As long as the Ukrainians are willing to fight, give them the stuff to do it, and let them DO it. The longer they stay in the game the longer we can stay out. Give the Russians too much of a case of indigestion and we might not ever have to get in it at all. Withdrawing our support almost certainly means that Putin takes all of Ukraine, now or a little bit down the road. We WILL be involved in the next step, and there WILL be a next step if Ukraine falls too easily. Putin has his Mein Kampf out there.