Japan Free: Peace Treaty Gives Back Sovereignty. In a formal ceremony, Secretary of State Dean Acheson and Ryuji Takeuchi, charge d'affaires, sign the ratified peace treaty, bringing the war to an official end and restoring Japan as a sovereign power. The Japanese envoy also is given possession of the embassy building after eleven years. Independence, WWII aftermath, World War Two. John Foster Dulles is present at the signing. At the Japanese embassy, a police officer opens a gate and a crowd of people enter. An American man hands the envoy the key to the building; vigorous handshake. The Rising Sun Japanese flag is raised.