"We don't think this resolution is enough in itself. We want the international community to take further action," U.S. Under Secretary of State for Political Affairs Nicholas Burns said after the U.N. Security Council passed the resolution on Iran for its defiance over its nuclear program.

"We would like to see more vigorous national and multilateral action against Iran, stronger sanctions -- and not just UN Security Council sanctions but outside the Council -- and we would like to see countries to stop doing business as usual with Iran," Burns said.

Burns made the remarks after the U.N. Security Council voted unanimously on Saturday to pass a resolution imposing sanctions against Iran over its controversial nuclear activities.

The resolution, which followed weeks of negotiations, demanded that Iran "suspend all enrichment-related and reprocessing activities, including research and development," and "work on all heavy water-related projects."

It also called on all states to impose a ban on trade with Iran in goods related to its nuclear programs and ballistic missile delivery systems.