Which U.S. president publicly warned Japan of “a rain of ruin” in August 1945?

Harry S. Truman publicly warned Japan of “a rain of ruin” in August 1945.

Truman was the president of the United States when Japan surrendered. In a radio address after the atomic bombing of Hiroshima, he called on Japan to accept the terms of the Potsdam Declaration and warned that continued resistance would bring further destruction. The phrase “rain of ruin” referred to the possibility of additional attacks from the air.

Truman had become president on April 12, 1945, after Franklin D. Roosevelt died. He therefore made the final wartime decisions in the European and Pacific theaters, including the authorization of the atomic bombings of Hiroshima and Nagasaki.

Japan’s surrender decision followed a series of major shocks: the destruction of Hiroshima, the Soviet declaration of war, the invasion of Japanese-held Manchuria, and the destruction of Nagasaki. The exact weight of each factor remains a subject of historical debate. Truman continued as president after the war and won election in his own right in 1948.