Tokyo received news of a devastating but mysterious event in Hiroshima on August 6, but it wasn`t until the next day that President Truman learned it was a nuclear bomb. The reaction of the Japanese armed forces to Truman`s assertion is extremely important. The Imperial Army said it would only admit after an investigation that it was an atomic bomb. But the attitude of the Imperial Navy was far more threatening. Navy leaders allowed the Americans to use an atomic bomb, but they could not possess more nuclear bombs, or if they did, they would not be so powerful. Planning for the use of additional nuclear weapons continued while this work was not yet complete. On August 10, Leslie Groves told the Department of War that the next bomb, another plutonium implosion weapon, would be “ready to be delivered in the first appropriate time after August 17 or 18.” After the destruction of Hiroshima and Nagasaki, there were only two objectives left from the original list: Kokura Arsenal and the city of Niigata. Groves therefore asked to add additional targets to the list of targets. His deputy, General Kenneth Nichols, proposed Tokyo. Truman, however, ordered an immediate halt to the nuclear attacks while negotiations on the surrender were underway. As Commerce Secretary Henry Wallace reported in his diary, Truman noted that he did not like the idea of killing “all these children.” Shortly after the conference on 13-14 August, at which the surrender was finally decided, a group of senior army officers, including Anami, met in a nearby room.
All those present were concerned about the possibility of a coup to prevent the surrender – some of them may even have considered launching one. After a silence, General Torashira Kawabe proposed that all the high-ranking officers present sign an agreement to carry out the emperor`s order of surrender: “The army will act to the end, in accordance with the imperial decision.” It was signed by all the senior officers present, including Anami, Hajime Sugiyama, Yoshijiré Umezu, Kenji Doihara, Torashira Kawabe, Masakazu Kawabe and Tadaichi Wakamatsu. “This agreement writes of the highest ranks in the army… like a huge fire against any attempt to launch a coup in Tokyo.  The Philippines ratified the Treaty of San Francisco on July 16, 1956, after signing a reparation agreement between the two countries in May of that year.  Indonesia has not ratified the San Francisco Peace Treaty. Instead, on January 20, 1958, it signed a bilateral reparation agreement and a peace treaty with Japan.  A separate treaty, the Treaty of Taipei, officially known as the Japanese Peace Treaty, was signed on April 28, 1952 in Taipei between Japan and the ROC, hours before the San Francisco Treaty came into force, also on April 28.   The seemingly illogical order of the two contracts is due to the difference between time zones.
At a conference with the cabinet and other members of the Council, Anami, Toyoda and Umezu again pleaded for the continuation of the struggle, after which the emperor said: In the early morning of 15 August, a military coup was attempted by a faction led by Major Kenji Hatanaka.