unlike china, there are 2 koreas. our aim these days is to avoid linking to wikipedia. the korea war lasted from 1950 – 1953. since the end of the war there has been a demilitarized zone between the north and the south. but why are there 2 koreas? as there were 2 in 1950 since the north invaded the south. here is a bit of information about the history of korea. here is more specific information about the division of korea in 1943. during the 2016 US presidential election, the libertarian candidate gary johnson said about north korea: I think the biggest threat in the world today is North Korea. And the nukes that they have, at some point, uh, Kim is going to be able to, uh, those intercontinental ballistic missiles are gonna actually work at some point.