Unfortunately with that logic then we will never push back against Russia. Putin invades Poland? “Oh we shouldn’t attack because Putin is irrational and might use Nukes, we’ll try appeasement first.” This interview with exiled Russian M. Khodorkovski (who used to be the richest guy in Russia until Putin jailed him for 10 years) is pretty convincing that this fear makes the “West” look weak to Putin and he’ll keep pushing until he’s stopped. https://youtu.be/OX6ISz0FotU