Iran completes facility to build centrifuges: nuclear chief

Iran has completed a facility to build advanced centrifuges, Iran's nuclear chief was quoted on Sunday as saying, as Tehran prepares to increase its uranium-enrichment capacity if the nuclear deal collapses after the United States exits.In June, Ali Akbar Salehi, the head of the Atomic Energy Organization of Iran, said the facility at the Natanz nuclear plant would be completed within a month.Salehi's statement in June came days after Supreme Leader Ayatollah Ali Khamenei said he had ordered pre