Nagasaki

Children pray for their ancestors after sweeping their family tombstones at a cemetery in Haiki, Nagasaki Prefecture, southern Japan, Wednesday, Aug. 13, 2014 as they celebrate the Bon Festival. Japanese believe that their ancestors' spirits return to their homes to reunite with their family during the three-day festival starting Aug. 13.

Eugene Hoshiko/AP

Children pray for their ancestors after sweeping family tombstones at a cemetery in Haiki, Nagasaki Prefecture, south Japan on Wednesday as they celebrate the Bon Festival.

A woman offers prayers at Nagasaki Peace Park in Nagasaki, southern Japan to mark the 68th anniversary of the world's second atomic bomb attack over the city, Friday, Aug. 9, 2013.

Kyodo news/AP

A woman offers prayers at the Nagasaki Peace Park in Nagasaki, southern Japan, to mark the 68th anniversary, on Friday, of the world’s second atomic bomb attack over the city

A student participates in a peace rally to commemorate the 68th anniversary of the atomic bombings of the Japanese cities of Hiroshima and Nagasaki, in Mumbai August 6, 2013. REUTERS/Danish Siddiqui (INDIA - Tags: ANNIVERSARY SOCIETY TPX IMAGES OF THE DAY)

Danish Siddiqui/Reuters

A student in Mumbai, India takes part in a peace rally on Tuesday to commemorate the 68th anniversary of the atomic bombings of the cities of Hiroshima and Nagasaki in JapanRead more