The U.N. nuclear watchdog Saturday reported Iran to the U.N. Security Council in a resolution expressing concern that Tehran's nuclear program may not be "exclusively for peaceful purposes." Iran retaliated immediately, saying it would resume uranium enrichment at its main plant instead of in Russia

The landmark decision by the International Atomic Energy Agency's 35-nation board sets the stage for future action by the top U.N. body, which has the authority to impose economic and political sanctions.
Still, any such moves were weeks if not months away. Two permanent council members, Russia and China, agreed to referral only on condition the council take no action before March.

Twenty-seven nations supported the resolution, which was sponsored by three European powers — Britain, France and Germany -— and backed by the United States.