A survivor of the 1945 atomic bombing of Hiroshima has visited the United Nations headquarters in New York and called for efforts to rid the world of nuclear weapons.
Shigeaki Mori, who is 81, spent years conducting research and identified 12 US prisoners of war who died in the bombing.
On Thursday, about 200 people attended a screening of a documentary film about Mori's work and his interactions with the bereaved families.
Mori said he had many wonderful encounters during his first trip to the United States. He said the Manhattan Project that led to the development of atomic bombs began in New York, and those that were dropped on Hiroshima and Nagasaki killed more than 200,000 people.
He expressed hope that people will use their talents for peace.
A man who campaigns for a nuclear test ban praised Mori for informing younger generations about the tragedy.
He said it's not easy to imagine what the world will be like in the future, but people should try to prevent the same thing from happening again.