Not sure what kind of training would be needed to use our cruise missiles, but I'd be fine with sneaking them over the border.  We've made it plain that we'll give them weapons to defend themselves even if we won't get into a hot war with Russia unless they cross the NATO line.  (Which is kind of an absurd stance, of course, but then war generally is absurd.)

I do think the various powers that be are right to reject the no-fly zone.

Be nice to America. Or we'll bring democracy to your country.