Cairo Declaration
The leaders of the United States, Britain and China met in Cairo and declared that Korea would become free and independent in due course, the first international pledge of Korean independence.

Roosevelt, Franklin D. (Franklin Delano), · Public domain · Source
Roosevelt, Churchill and Chiang Kai-shek met in Cairo in November 1943 and published the declaration on 1 December: "mindful of the enslavement of the people of Korea, [they] are determined that in due course Korea shall become free and independent." Kim Gu and the Provisional Government had asked Chiang to include Korean independence.
The Potsdam Declaration of July 1945 reaffirmed the Cairo terms. The Provisional Government objected to "in due course" as falling short of immediate independence.