That's not exactly "cheering on nuclear escalation" though. I'm against further escalation, but I'm also against the notion that even the slightest western intervention is immoral because it might anger Mr. Putin into starting a nuclear war.
NATO enforcing a no-fly zone over Ukraine would entail NATO blowing up radar and SAM installations manned by Russian soldiers in Russia near the Ukrainian border. I'm no expert on politics or warfare but it sure seems like NATO directly attacking Russia like that would be pretty likely to result in MIRV launches.
