The decade of the 1980s represented a turning point in American history—a crucial era, marked by political conservatism and an individualistic ethos. The 1980s also witnessed a dramatic series of developments in U.S. foreign relations, first an intensification of the Cold War with the Soviet Union and then a sudden relaxation of tensions and the effective end of the Cold War with an American victory. All of these developments were advanced and symbolized in the presidential administration of Ronald Reagan (1981–1989), a polarizing figure but a highly successful political leader. Reagan dominates our memories of the 1980s like few other American leaders do other eras. Reagan and the political movement he led—Reaganism—are central to the history of the 1980s. Both their successes and their failures, which became widely acknowledged in the later years of the decade, should be noted. Reaganite conservatives won political victories by rolling back state power in many realms, most of all in terms of taxation and regulation. They also succeeded in putting America at the unquestioned pinnacle of the world order through a victory over the Soviet Union in the Cold War, although this was unforeseen by America’s Cold Warriors when the 1980s began. The failures of Reaganite conservatism include its handling of rising poverty levels, the HIV/AIDS crisis, and worsening racial tensions, all problems that either Reaganites did little to stem or to which they positively contributed. In foreign affairs, Reaganites pursued a “war on terror” of questionable success, and their approach to Third World arenas of conflict, including Central America, exacted a terrible human toll.