Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Iran's Supreme Leader: UN Nuclear Agency Lacks Independence VOA News 28 February 2010 A handout picture released by the official website of Iran's supreme leader shows Ayatollah Ali Khamenei addressing a meeting in Tehran on December 13, 2009. Photo: AFP Ayatollah Ali Khamenei (file) Iran's supreme leader says the United Nations nuclear agency lacks independence and is easily influenced by the United States. Ayatollah Ali Khamenei said Sunday in Tehran that this influence could undermine the agency's reputation. He spoke one day before the U.N.'s International Atomic Energy Agency begins discussions about its latest report on Iran. The Vienna-based IAEA expressed concern in a report earlier this month that Tehran may be working to develop a nuclear payload for a missile. Iran has refused to accept a U.N.-backed offer to ship most of its enriched uranium to Russia and France for further processing into fuel. Western nations believe the measure would prevent Iran from diverting the uranium for military use. Tehran insists it nuclear activities are for peaceful purposes. The United States, France, Britain and Germany have called for harsh sanctions against Iran to prevent its advance toward nuclear weaponry. Russian President Dmitri Medvedev called on Iran Thursday to act responsibly to help end an international dispute over its nuclear program. Russia, a permanent member of the U.N. Security Council, has not ruled out supporting new sanctions against Iran. Moscow says any such sanctions must be aimed at preventing the spread of nuclear weapons rather than punishing Iran as a whole. In another development, senior Israeli officials were in Beijing last week for talks aimed at persuading China to support new sanctions against Iran. China imports much of its energy from Iran and has been opposed to new sanctions, saying there is still room for dialogue to resolve the nuclear dispute. Israel sees a nuclear-armed Iran as a threat to its existence. Some information for this report was provided by AP, AFP and Reuters. .