Re: United Nations
The UN is not designed to be the enforcement arm of US foreign policy. They do have their place.
Anyone heard Newt Gingrich's theory on the UN? Awhile back I heard him, and he suggested when there was lots at stake on some issues, simply bypass the UN and take some issues directly to the G-8--come up with agreements that all major economic powers can get behind, and implement those.
While we may well not get precisely everything we want, we will present a unified front with enormous economic clout. It may not work in every case, but it's worth a try.
In the case of Iran, or other mideast countries, it may be tough to get them to take sanctions seriously because they are awash in oil money, no matter who issues those sanctions.
Countries change because they have to--not because they want to or are told to. Cut off their oil money, and they will change in a hurry. The key is to figure out how to cut off their oil money.