How America can help Ukraine cripple the Russian war machine

With Ukrainians willing to fight and allies supplying them with weapons, training, and intelligence, the Russian military machine can be effectively countered.

Russia and Ukraine are locked in a contest of wills. 

Slowing – or perhaps even stalemating – the Russian war machine is a matter of extreme urgency. As Russian forces target population centers, a war of attrition will ensue as they attempt to inflict escalated destruction. Putin will want this carnage to break the back of the resistance and create leverage for concessions, including a guarantee that Ukraine remain a neutral state, reduce its armed forces to a level acceptable to Russia, and promise it will never join NATO.