Putin is evil an unpredictable. However, I think his nuclear threat may have been a bluff. He has no problem killing others but he doesn’t want to die himself, which would happen due to MAD. Of course I could be completely wrong but that’s the way I see it. I am also concerned that this administration wouldn’t have the guts to perform MAD, not that it would really matter to us once Russia launched their nukes. What we should have done is reminded him of MAD when he made that threat but our leaders are too weak.