Six world powers comprising five permanent UN Security Council members and Germany are prepared to start negotiations with Iran on its nuclear program only on condition that the Islamic Republic suspends its uranium enrichment activities.
Iran has been at the center of international concerns since January 2006 over its nuclear program, which some countries, particularly the United States, suspect is geared toward nuclear weapons development. Tehran has consistently denied the claims, and says it needs nuclear power for civilian purposes.
In response to Iran's unwillingness to give up its nuclear ambitions, the UN Security Council adopted Resolution 1737 last December, which provided for sanctions against Iran banning activities involving uranium enrichment, chemical reprocessing, heavy water-based projects, and the production of nuclear weapons delivery systems.