The Japan Confederation of A- and H-Bomb Sufferers Organizations, better known as Nihon Hidankyo, have always worked behind the scenes to reduce nuclear weapons, U.N. disarmament chief Izumi Nakamitsu said of this year's Nobel Peace Prize winner.

Whenever there have been international conferences on nuclear disarmament at the United Nations, which brings together diplomats from all over the world, Nihon Hidankyo has always sent its members to convey the voices of hibakusha atomic bomb survivors.

Nihon Hidankyo "has a long relationship with the U.N. disarmament division," Nakamitsu, U.N. under-secretary-general and high representative for disarmament affairs, said in a recent interview.