Diplomats say Iran has agreed to fully suspend its uranium enrichment program in a deal brokered by several European countries.
The International Atomic Energy Agency has received Iran's written commitment to halt uranium enrichment activities, but full details of the agreement were not yet available.
Iran's top nuclear negotiator (Hassan Rowhani) announced the agreement Sunday evening in Tehran. Iranian officials said Tehran would suspend uranium enrichment efforts as long as European countries continued working on a more permanent agreement.
European countries had warned Iran that they would support U.N. sanctions against the country if it refused to agree to halt its enrichment efforts.
Uranium enrichment can be used to make material for nuclear weapons, but Iran had insisted its enrichment programs were for peaceful purposes.