中美共同防禦條約
On , the U.S. Joint Chiefs of Staff recommended the use of nuclear weapons against mainland China. President Eisenhower, however, resisted pressure to use nuclear weapons or involve American troops in the conflict. However, on , the United States and the ROC agreed to the Sino-American Mutual Defense Treaty, which did not apply to islands along the Chinese mainland. This treaty was ratified by the U.S. Senate on .