It is proliferation because they currently have none and would now have more. Even if not, which nuclear bombs are we “using” right now?
I’m sure sending nukes to a war-torn country will do nothing to resolve the conflict or stabilize the region. Israel is constantly in conflict despite having nukes and other WMD goodies. How could this possibly help? Do you imagine they’d use them? MAD only ensures that nukes don’t get launched. Putins “operation” in Ukraine could continue completely unimpeded