Iran is now running 7,000 uranium enrichment centrifuges according to the country's "atomic chief." The announcement came after the country's president expressed a desire to dialogue about his nuclear plans. "If there is a unilateral, conditional conversation based upon an atmosphere of threats, then no free human being would accept that. But if there is justice, equality of the two sides, respect is there, the Iranian nation is always ready for negotiations," President Mahmoud Ahmadinejad said. The centrifuges harness uranium gas to fuel a reactor or, in some cases, a nuclear weapon. The Obama administration has said it wants to use diplomacy to resolve concerns over Iran's nuclear ambitions. It was previously thought Iran had about 5,000 centrifuges.