During the final stage of World War II, the United States dropped two atomic bombs on the Japanese cities of Hiroshima and Nagasaki on Aug 6 and 9, 1945, respectively.
The ambassador of Bangladesh to Japan, Rabab Fatima, led the Asian countries in offering wreath at Nagasaki City Peace Park on Wednesday morning to pay homage to the victims of atomic bomb dropped by the USA in Nagasaki in 1945.
"The worldwide situation surrounding nuclear weapons is becoming increasingly tense", he continued. The bomb's code name was "fat man".
"A strong sense of anxiety is spreading across the globe that in the not too distant future these weapons could actually be used again", Taue said in Nagasaki's Peace Park. The bombing was three days after a similar US bomb destroyed Hiroshima, killing 140,000.
"As the only country in the world to have suffered wartime atomic bombings, I urge the Japanese government to reconsider the policy of relying on the nuclear umbrella and join the nuclear prohibition treaty at the earliest possible opportunity", he said.
He also urged the central government to reconsider the policy of relying on the US nuclear umbrella and "reaffirm to the world its commitment to the pacifist ethos of the Constitution of Japan, which firmly renounces war".
The outspoken mayor praised the atomic bombing survivors, or "hibakusha", for their lifelong devotion to the effort.
Prime Minister Abe delivered a speech at the ceremony, in which he still made no mention of the historical background for the atomic bombings or Japan's aggressive war against its neighbors.
More than 175,000 hibakusha have died in Nagasaki since the attack, including 3,551 in the past year, while over 300,000 of their peers have died in Hiroshima.