28 countries unite against Axis Powers
On January 2, 1942, twenty-eight countries formally agreed not to make peace with the Axis Powers separately. At the time, all twenty-eight were fighting against the Axis as Allies in World War II. The agreement was part of the Declaration by the United Nations, signed the previous day. In December of 1941, U.S. President Franklin D. Roosevelt referred to this group of allies as the "United Nations."