Does the UN have a backbone?

I just reading an article about Iran's nuclear centrifuge capabilities being confirmed by the IAEA. They are very obviously pushing the envelope of what should be allowed. A nuclear Iran is unacceptable.

Decision time for US over Iran threat

To me the real question is: Does the UN have a backbone at all? Will they finally stand up and say enough is enough or will they again condemn the behavior and say knock it off PLEASE.

So many people around the world condemn the U.S. for acting unilaterally. If the UN had any spine or any place where they would actually draw a line and not back down, the US might not have to do that. Unfortunately, again it is beginning to look like the UN will shirk it's responsibilities.

Who will again deal with the problem, pay the cost, pay the price, and make the world safer for all? The same people who have been doing it for decades... the U.S. and it's real allies (UK, Australia, etc.). France, Germany, and Russia will wring their hands and then complain about our unilateral nature.

When will the UN or the hand wringers finally show some spine??