A senior Iranian official has said Tehran's decision to halt its disputed uranium-enrichment programme was a temporary measure aimed at fostering trust in its peaceful intentions.
"One of the agreed points was that Iran voluntarily will temporarily suspend enrichment to show its goodwill and to create new trust between Iran and other countries," Supreme National Security Council chief Mr Hassan Rohani told reporters.
He was speaking after meetings with the foreign ministers of Britain, France and Germany in Tehran aimed at dispelling suspicions about Iran's nuclear ambitions.
Iran earlier agreed to sign and ratify an agreement on tougher inspections of its nuclear sites and suspend uranium-enrichment and processing activities, according to an official declaration.
"Having received the necessary clarifications, the Iranian government has decided to sign the International Atomic Energy Agency (IAEA) Additional Protocol and commence ratification procedures," the declaration said.
"While Iran has a right within the nuclear non-proliferation regime to develop nuclear energy for peaceful purposes it has decided voluntarily to suspend all uranium enrichment and processing activities as defined by the IAEA," it added.