A Japanese atomic bomb survivor who spent decades researching American prisoners of war killed in the Hiroshima attack has died at age 88.

Mori, who was 8 years old when the U.S. attacked the Japanese city, later tracked down the families of 12 American POWs in Japan who were killed in the blast.

Earlier this month, Shigeaki Mori warned that the world was at risk of another nuclear attack over the wars in the Middle East and Ukraine Shigeaki Mori, the Japanese atomic bomb survivor whose hug ...