The head of the Atomic Energy Organization of Iran says Tehran has built a new generation of centrifuges for uranium enrichment. Ali Akbar Salehi says Iran has built two kinds of second generation centrifuges with capacity twice as the ones before. He says the second-generation centrifuges have been installed but under the Geneva deal, Iran will not inject gas into them for six months. He also says if Iran needs 20 percent enriched uranium for its nuclear facilities, the country has the right to enrich it. Salehi confirmed that Tehran has negotiated the construction of four new nuclear facilities with Moscow. Under an interim nuclear deal reached in Geneva in November, Iran has agreed not to bring new centrifuges into operation for six months. But the deal does not stop it from developing centrifuges. Show Less >>