This is the best description of the United Nations that I have ever found:
The U.N. consists of two main bodies:
The General Assembly, which is, in the generous spirit of the U.N. Charter, open to just about every little dirtbag nation in the world. It has no power. Its functions are to: (1) Have formal receptions; (2) Listen to the Grateful Dead on headphones; and (3) Denounce Israel for everything, including sunspots.
The Security Council, which is limited to nations that have mastered the concept of plumbing. It is very powerful. Its functions are to: (1) Pass sweeping resolutions to end bloody conflicts; and then (2) Veto, ignore, or walk out on these resolutions.
Dave Barry, Dave Barry Slept Here: A Sort of History of the United States, p. 122