The first one was USSR and Cuba during the Cold War. It was not ridiculously unbelievable. Now? North Korea? WTF? That’s the enemy the first female president is protecting us from, Hollywood? You suck, Hollywood.
Your first sign you’re in trouble is snow falling. Pretty soon tiny figures on skies are cutting your 4CI. Then your cookie order shows up and you lose communication with your tripwire units. The next thing you know Chinese border guards are exchanging mementos with S.Korean traffic cops on your northern border.