Yeah this is far more a matter of there being a line. Putin has been aggressive towards nato and the eu for a long time. He’s currently invading countries when they get closer to us and cracking down on his own citizens’ rights. It’s clear he won’t stop with Ukraine. He can rattle his saber all he wants. If he fires a nuke France alone can destroy all of Russia that matters, and that’s assuming his fuckery with the US stops us from doing our duty to MAD and NATO.