North Korea will never cause a world war. The Kim regime is not liked by anyone. It is very quickly destroyed and the world will live in peace. Trump wants this win and he will achieve it. Kim or myself will give up nuclear weapons and then maybe it will not touch, or the US will destroy him.
Stop dreaming. Kim Jong Un is not Saddam Hussein. The war will go on for many years and no one will be able to achieve a comprehensive victory in the end. It will destroy Trump and the Republican party. Perhaps it will ultimately result in the disintegration of the United States as well.