Here is a fascinating article on a way to possibly revive the UN - and bring about a UN worth having, or perhaps the beginnings of it's successor:

Imagine a better Washington. Imagine a conservative Republican administration working hand in glove with liberal congressional Democrats on a foreign-policy initiative designed to strengthen the United Nations while simultaneously increasing America's clout there. Imagine both parties and both branches bringing this initiative to fruition smoothly and unfussily, during an election year. Say, this year. Say, right now.

Pinch yourself. It is happening.