Iran has welcomed a Russian proposal to revive talks between Tehran and six world powers on Iran's controversial nuclear program. Iran's nuclear negotiator, Saeed Jalili, told state media today that the Russian plan could be a basis for restarting talks on nuclear activities. Jalili had met with Russia's National Security Council secretary, Nikolai Patrushev, earlier in the day. The senior Russian official arrived in Tehran yesterday to discuss the nuclear issue. Russia is trying to revive talks involving Iran and Western nations that are concerned Tehran is trying to develop nuclear weapons.