New Delhi, Aug. 6 -- Eighty years after the atomic bombings of Hiroshima and Nagasaki, many of the remaining Japanese survivors are increasingly frustrated by growing nuclear threats and the acceptance of nuclear weapons by global leaders.

The U.S. attacks on Hiroshima on Aug. 6, 1945, and three days later on Nagasaki killed more than 200,000 people by the end of that year. Others survived but with radiation illness.

About 100,000 survivors are still alive. Many hid their experiences to protect themselves and their families from discrimination that still exists. Others couldn't talk about what happened because of the trauma they suffered.

Some of the aging survivors have begun to speak out late in their lives, hoping to encourage other...