evidence: At the series of meetings in Cairo, Roosevelt outlined his vision for postwar Asia. He wanted to establish the Republic of China as one of his "Four Policemen." This concept referred to a vision for a cooperative world order in which a dominant power in each major region would be responsible for keeping the peace there. Weak as the Republic of China would inevitably be after the war, it would still be the major power in Asia, and it could help prevent renewed Japanese expansionism and oversee decolonization under a trustee system. Roosevelt hoped to prevent the British and the Russians from using postwar instability to increase their presence in Asia, and he advocated for Indochina to be established as a trusteeship instead of returned to France after the Japanese defeat. To secure this future, he sought a commitment from Chiang Kai-shek that China would not try to expand across the continent or control decolonizing nations, and in return, he offered a guarantee that the territories stolen from China by Japan - including Manchuria, the island of Taiwan and the Pescadores Islands - would be returned to Chinese sovereignty.