It is well known that Ronald Reagan and Margaret Thatcher were close allies and kindred political spirits. During their eight overlapping years in office, the U.S. president and the U.K. prime minister worked together to promote lower taxes, deregulation, free trade, and an aggressive stance against the Soviet Union.But according to Nicholas Wapshott, the Reagan/Thatcher relationship was much deeper than an alliance of mutual interests. Drawing on interviews with those closest to them, as well as on hundreds of recently declassified private letters and telephone calls, Wapshott depicts a more complex, personal, and sometimes argumentative relationship than has previously been revealed.