The leaders of the major Allied powers met at the
Potsdam Conference from 16 July to 2 August 1945. The participants were the
Soviet Union, the
United Kingdom, and the
United States, represented by Stalin,
Winston Churchill (later
Clement Attlee), and Truman respectively.
Negotiations Although the Potsdam Conference was mainly concerned with European affairs, the war against Japan was also discussed in detail. Truman learned of the successful Trinity test early in the conference and shared this information with the British delegation. The successful test caused the American delegation to reconsider the necessity and wisdom of Soviet participation, for which the U.S. had lobbied hard at the
Tehran and
Yalta Conferences. The United States prioritized shortening the war and reducing American casualties—Soviet intervention seemed likely to do both, but at the cost of possibly allowing the Soviets to capture territory beyond that which had been promised to them at Tehran and Yalta, and causing a postwar division of Japan similar to that which had
occurred in Germany. In dealing with Stalin, Truman decided to give the Soviet leader vague hints about the existence of a powerful new weapon without going into details. However, the other Allies were unaware that Soviet intelligence had penetrated the Manhattan Project in its early stages, so Stalin already knew of the existence of the atomic bomb but did not appear impressed by its potential.
Potsdam Declaration It was decided to issue a statement, the
Potsdam Declaration, defining "Unconditional Surrender" and clarifying what it meant for the position of the emperor and for Hirohito personally. The American and British governments strongly disagreed on this point—the United States wanted to abolish the monarchy, or to force the Emperor from the throne and possibly try him as a war criminal, while the British wanted to retain the imperial family's position, perhaps with Hirohito still reigning. Furthermore, although it would not initially be a party to the declaration, the Soviet government also had to be consulted since it would be expected to endorse it upon entering the war. Assuring the retention of the emperor would change the Allied policy of unconditional surrender and necessitated consent from Stalin. The American Secretary of State James Byrnes, however, wanted to keep the Soviets out of the Pacific war as much as possible and persuaded Truman to delete any such assurances. The Potsdam Declaration went through many drafts until a version acceptable to all was found. On 26 July, the United States, Britain and China released the Potsdam Declaration announcing the terms for Japan's surrender, with the warning, "We will not deviate from them. There are no alternatives. We shall brook no delay." For Japan, the terms of the declaration specified: • the elimination "for all time [of] the authority and influence of those who have deceived and misled the people of Japan into embarking on world conquest" • the occupation of "points in Japanese territory to be designated by the Allies" • that the "Japanese sovereignty shall be limited to the islands of
Honshū,
Hokkaido,
Kyūshū,
Shikoku and such minor islands as we determine." As had been announced in the
Cairo Declaration in 1943, Japan was to be reduced to her pre-1894 territory and stripped of her pre-war empire including
Korea and
Taiwan, as well as all her recent conquests. • that "[t]he Japanese
military forces, after being completely disarmed, shall be permitted to return to their homes with the opportunity to lead peaceful and productive lives." • that "[w]e do not intend that the Japanese shall be enslaved as a race or destroyed as a nation, but stern justice shall be meted out to all
war criminals, including those who have visited cruelties upon our prisoners." – those pictured include
Clement Attlee,
Ernest Bevin,
Vyacheslav Molotov,
Joseph Stalin,
William D. Leahy,
James F. Byrnes, and
Harry S. Truman. On the other hand, the declaration stated that: • "The Japanese Government shall remove all obstacles to the revival and strengthening of democratic tendencies among the Japanese people.
Freedom of speech,
of religion, and
of thought, as well as respect for the
fundamental human rights shall be established." • "Japan shall be permitted to maintain such industries as will sustain her economy and permit the exaction of just reparations in kind, but not those which would enable her to rearm for war. To this end, access to, as distinguished from control of, raw materials shall be permitted. Eventual Japanese participation in world trade relations shall be permitted." • "The occupying forces of the Allies shall be withdrawn from Japan as soon as these objectives have been accomplished and there has been established, in accordance with the freely expressed will of the Japanese people, a peacefully inclined and responsible government." The only use of the term "
unconditional surrender" came at the end of the declaration: • "We call upon the government of Japan to proclaim now the unconditional surrender of all Japanese armed forces, and to provide proper and adequate assurances of their good faith in such action. The alternative for Japan is prompt and utter destruction." Contrary to what had been intended at its conception, the Declaration made no mention of the Emperor at all. The short-lived interim Secretary of State
Joseph Grew had advocated for retaining the emperor as a constitutional monarch. He hoped that preserving Hirohito's central role could facilitate an orderly capitulation of all Japanese troops in the Pacific theatre. Without it, securing a surrender could be difficult. Navy Secretary
James Forrestal and other officials shared the view. Allied intentions on issues of utmost importance to the Japanese, including whether Hirohito was to be regarded as one of those who had "misled the people of Japan" or even a war criminal, or alternatively, whether the Emperor might become part of a "peacefully inclined and responsible government" were thus left unstated. The "prompt and utter destruction" clause has been interpreted as a veiled warning about American possession of the atomic bomb (which had been tested successfully on the first day of the conference). On the other hand, the declaration also made specific references to the devastation that had been wrought upon Germany in the closing stages of the European war. To contemporary readers on both sides who were not yet aware of the atomic bomb's existence, it was easy to interpret the conclusion of the declaration simply as a threat to bring similar destruction upon Japan using conventional weapons.
Japanese reaction On 27 July, the Japanese government considered how to respond to the Declaration. The four military members of the Big Six wanted to reject it, but Tōgō, acting under the mistaken impression that the Soviet government had no prior knowledge of its contents, persuaded the cabinet not to do so until he could get a reaction from Moscow. The cabinet decided to publish the declaration without comment for the time being. In a telegram,
Shun'ichi Kase, Japan's ambassador to Switzerland, observed that "unconditional surrender" applied only to the military and not to the government or the people, and he pleaded that it should be understood that the careful language of Potsdam appeared "to have occasioned a great deal of thought" on the part of the signatory governments—"they seem to have taken pains to
save face for us on various points." The next day, Japanese newspapers reported that the Declaration, the text of which had been broadcast and dropped by
leaflet into Japan, had been rejected. In an attempt to manage public perception, Prime Minister Suzuki met with the press, and stated: Chief Cabinet Secretary
Hisatsune Sakomizu had advised Suzuki to use the expression . Its meaning is ambiguous and can range from "refusing to comment on" to "ignoring (by keeping silence)". What was intended by Suzuki has been the subject of debate. Tōgō later said that the making of such a statement violated the cabinet's decision to withhold comment. On 30 July, Ambassador Satō wrote: "There is no alternative but immediate unconditional surrender if we are to prevent Russia's participation in the war." On 2 August, Tōgō wrote to Satō: "it should not be difficult for you to realize that ... our time to proceed with arrangements of ending the war before the enemy lands on the Japanese mainland is limited, on the other hand it is difficult to decide on concrete peace conditions here at home all at once." == Hiroshima, Manchuria, and Nagasaki ==