The only positive things I can say about the U.N. is their ability to provide food and clothing for the cold and hungry, plus they're good at coordinating and supervising national elections. As far as them being some kind of Global Security organization, That's a joke. The U.N. is the ideal refuge for Tyrant's, once they are denounced by the U.N. they are assured at least 2 or more years to decieve the world before the next denounciation.
The U.N. needs to assume their rightful place in history, right next to the League Of Nations