Okay, let me remind you then.

Korea was divided by both United States and the Soviet Union. The Soviet Union organized elections, rigging towards a rather unpopular figure, even within the national socialist circles, for their imperialist purposes.

Also, correct me if I'm wrong, but where did OP state was american? How is their nationality even relevant here? How is the american descent to authoritarianism, which is still far from a autocratic socialist regime (at least yet), relevant to NK being distrusted even by USA's opposition (i.e. China and Russia)?