Kerry Heads To Geneva For Iran Nuclear Talks US Secretary of State John Kerry will fly to Geneva to participate in nuclear programme negotiations with Iran. Six world powers - the United States, Russia, China, Britain, France and Germany - are working on a deal to cap some of Iran's atomic programmes in exchange for limited relief from sanctions stifling Iran's economy. A senior US State Department official travelling with Mr Kerry in Amman, Jordan, said the secretary would come to Geneva "to help narrow differences in negotiations." Even if an agreement is reached, it would only be the start of a long process to reduce Iran's potential nuclear threat, with no guarantee of ultimate success. Even a limited accord would mark a breakthrough after nearly a decade of mostly inconclusive talks focused on limiting, if not eliminating, Iranian atomic programmes that could be turned from producing energy into making weapons. The talks are primarily focused on the size and output of Iran's enrichment program, which can create both reactor fuel and weapons-grade material suitable for a nuclear bomb. Iran insists it is pursuing only nuclear energy, medical treatments and research, but the United States and its allies fear that Iran could turn this material into the fissile core of nuclear warheads.