This is the story of the People's Republic of China's success in having Washington recognize Beijing as the legitimate capital of mainland China, replacing Taiwan's Nationalist Government's claims to the contrary. This is a unique story given the mindset of Washington in 1952 that Communism was evil and had to be contained. Who would have anticipated that the 1954 Geneva Conference talks about the repatriation of detained nationals would lead to President Carter granting Beijing diplomatic recognition on January 1, 1979. Throughout the negotiations in Warsaw, Shanghai, Beijing and Washington, Moscow's presence was often felt in the Forbidden City and in the White House. This is the story of how unintended consequences coupled with unexpected changes in leadership transformed relations from enemies to friends and antagonists to partners without abandoning Taiwan in the process. From Enemy to Ally is based heavily upon documents found in the Foreign Relations Series of the United States, especially its latest two volumes on China, the most recent covering the period 1977-1980 published in 2013.