Sure you can say that, as powerful as US is, it can take out anybody anywhere any time, let alone a dictator of a tiny island country at the footstep of the mighty US. History has shown us, this has been done many times in the history, and I will not be surprised if Kim Jung Un drop dead tomorrow morning for some unknown cause.
But this was not my point. From different perspective, people can arrive different conclusions on the same issue. Your perspective maybe unique, but it is hardly the ONE and ONLY way. You see, people here have been "conditioned" to look this world through Hollywood's lens,
"We are the Good Guys and anyone who are not with us are Bad Guys". It is OK for kids who know nothing more than Disney cartoons, but it is just simply silly for experienced adults to think this world is all about "the Good vs the Evil". Remember critical thinking? Practice what you preach.