I'm starting to get fed up with the nuclear threat:

Medvedev raises spectre of Russian nuclear strike on Ukraine

If it were up to me, I would be prepared to launch a massive nuclear counterattack the moment Russia drops a single atomic bomb on Ukraine.

Ex-CIA officer says Putin is 'completely cornered' and the chances of his using tactical nuclear weapons in Ukraine are increasing 'by the day'

Since the negative radiation effects would affect neighboring NATO member countries, I would consider the attack as triggering Article 5.

Surely this would end in a planetary catastrophe, but you can't live your whole life under the threat of a bully without reacting. I'd rather die with dignity than live on my knees.