Francis Fukuyama’s criticism of the Iraq war put him at odds with neoconservative friends both within and outside the Bush administration. Here he explains how, in its decision to invade Iraq, the Bush administration failed in its stewardship of American foreign policy. First, the administration wrongly made preventive war the central tenet of its foreign policy. In addition, it badly misjudged the global reaction to its exercise of “benevolent hegemony.” And finally, it failed to appreciate the difficulties involved in large-scale social engineering, grossly underestimating the difficulties involved in establishing a successful democratic government in Iraq.