An extremely powerful nation, one of a very few dominant states in an era when the world is divided politically into these states and their satellites.
A war from 1950 to 1953 between communist North Korea and Noncommunist South Korea that involved the Soviet and Chinese support for the North and U.S. And in support for the South.
They decided to have nuclear weapons to destroy other nations, but now they want other nations to get rid of those nuclear weapons because of something happens there going straight to taking those nuclear weapons out and killing each other destroying our world with those technological weapons.