Get rid of the United Nations. It ended any usefulness after the Korean war and the Soviets realized how not to handle their actions at the U.N. After that and the admission of Communist China, “peace” could never again be partnered by the United Nations. Since then all United Nations activity has been a waste.
If you get rid of the UN, all those useless people will be loose upon the world with time on their hands. Homeless people are relatively harmless, so long as they’re high all the time. Spurned diplomats, however, are prone to make trouble.