Who was president when the bombs were dropped on japan?
Harry S. Truman (May 8, 1884 – December 26, 1972) was the 33rd president of the United States from 1945 to 1953, succeeding upon the death of Franklin D. Roosevelt after serving as vice president. He implemented the Marshall Plan to rebuild the economy of Western Europe, and established the Truman Doctrine and NATO.
Who was president of United States when the bombs were dropped on japan?
Harry S. Truman
Harry S. Truman
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Who was emperor of Japan when the bombs were dropped on japan?
Hirohito Shōwa Emperor Shōwa Emperor Shōwa
Harry R. Truman
https://en.wikipedia.org/wiki/Harry%20R.%20Truman
Harry S. Truman
https://en.wikipedia.org/wiki/Harry%20S.%20Truman
Hirohito
https://en.wikipedia.org/wiki/Hirohito
In August, the Japanese government refused surrender demands as specifically outlined in the Potsdam Declaration. With the invasion of Japan imminent, Truman approved the schedule for dropping the two available bombs. Truman always said attacking Japan with atomic bombs saved many lives on both sides; military estimates for the invasion of Japan were that it could take a year and result in 250,000 to 500,000 U.S. casualties. Hiroshima was bombed on August 6, and Nagasaki three days later, leaving 105,000 dead.[126] The Soviet Union declared war on Japan on August 9 and invaded Manchuria. Japan agreed to surrender the following day.
Harry S. Truman
In his first ever press conference given in Tokyo in 1975, when he was asked what he thought of the bombing of Hiroshima, the Emperor answered: "It's very regrettable that nuclear bombs were dropped and I feel sorry for the citizens of Hiroshima but it couldn't be helped because that happened in wartime" 
Hirohito
Emperor Shōwa (昭和, 29 April 1901 – 7 January 1989), better known in English by his personal name Hirohito[a] (裕仁), was the 124th emperor of Japan, ruling over the Empire of Japan from 1926 until 1947, after which he was Emperor of the state of Japan until his death in 1989.
Hirohito
Harry S. Truman was president when bombs were dropped on Japan. After the Japanese government refused to surrender, Truman went forward with having Hiroshima bombed, and Nagasaki bombed three days later, leaving 105,000 dead. Truman always said attacking Japan with atomic bombs saved many lives on both sides. When asked about the bombing of Hiroshima, the Japanese emperor at the time, Emperor Shōwa, who was better known in English by his personal name Hirohito, said "It's very regrettable that nuclear bombs were dropped and I feel sorry for the citizens of Hiroshima but it couldn't be helped because that happened in wartime." 