You are asserting, then, that it is "common sense" that we should allow North Korea to absorb South Korea--as Little Kim would surely not allow the opposite? Is that really what you are suggesting?
So far you have not provided any link to prove your ridiculous claim. Maybe one fine day your brutal master will kill 3000 of his own citizens in the fashion of your 9/11 American fairy tale and put the blame on American imperialists. However, you have to pray very hard that none of your family members or relatives are among the unlucky 3000. Perhaps sometime in the future, your master may even shoot himself with his own gun but blame the shooting on US assassins instead.