Thats very dangerous especially when you are dealing with other nations like Russia and China. You can start a global nuclear war.
They started it. They are talking smack. China/USA is a symbiotic relationship that is dependent upon each other, and Russia is in shambles. They may talk - but would do nothing. Especially for Sung who is a crazy bastard - we'd be doing the planet a favor. Now is the best time - to kick ass - and show the world America means business.