Columbia International Affairs Online
CIAO DATE: 6/5/2007
The Winning Weapon? Rethinking Nuclear Weapons in Light of Hiroshima
April 2007
Belfer Center for Science and International Affairs, Harvard University
Abstract
Did the bombings of Hiroshima and Nagasaki force the Japanese to surrender in 1945? Did nuclear weapons, in effect, win the war in the Pacific? These questions matter because almost all thinking about nuclear war and nuclear weapons depends, in one way or another, on judgments about the effect of these attacks.
Scholarship about Japan’s decision to surrender can be divided into three phases. During the first twenty years after Hiroshima, historians and strategists rarely questioned the necessity of using the atomic bomb or the decisive role it played in bringing World War II to a close. In 1965, however, a revisionist school began examining the decision to use the bomb more closely, raising moral questions about the use of nuclear weapons and asking probing questions about the motives of U.S. leaders. They continued to believe, however, that the bomb was instrumental in ending the war. Since 1990 new scholarship, including recently declassified documents and extensive research into Japanese, Soviet, and U.S. archives, has led to new interpretations of Japan’s surrender. New questions have been raised about the centrality of nuclear weapons in coercing Japan to end the war. In particular, analysis of the strategic situation from a Japanese perspective has led some scholars to assert that the Soviet Union’s entry into the Pacific war may have been as important or even more important in coercing Japan’s leaders.
