Steven Leeper, the first non-Japanese to have led the Hiroshima Peace Culture Foundation, will continue to lobby for the abolition of nuclear weapons following his resignation from the chairman's post in March.
"Japan has a mission to lead human beings to a nuclear-free world," the Leeper said. "Hiroshima in particular should be the leader of any related move."
Leeper, 65, stepped down as chairman of the foundation, which operates the Hiroshima Peace Memorial Museum, at the end of March after serving for six years.