Yeah, it´s always so easy, but later it turns out that it isn´t such a cakewalk after all. At some point the usual nutcases will start talking about how the people of North Korea will welcome the invaders with flowers and democracy will be in place in no time
Do you really believe that the United States can achieve a conclusive military victory against DPRK? I don't think so (that is, unless the Americans nuke every square inch of North Korea). Unlike the case with countries such as Iraq and Libya, the North Korean military technology is very advanced. They even have ICBMs, capable of targeting the whole of Japan (and probably Alaska as well).
All I´m saying is that when war is being scammed on it´s always easy. That´s how salesmen work. It´s hopeless to attack North Korea but if they decide to do it that won´t matter,
They can be defeated by nuking them, no doubt, but as soon as a nuke is dropped markets around the world will crater, probably close to zero. It would be like getting rid of a headache by blasting your head off.