Despite the end of the Cold War, the frequency of U.S. military intervention has increased. While military intervention accelerated after 9/11, increasing intervention was demonstrably evident well before 2001. Presidential Decision Making and Military Intervention in the Post–Cold War Era: Go or No-Go analyzes presidential decision making regarding military intervention through a focused, structured comparison of “go” and “no-go” decisions from the four successive administrations of Presidents George H. W. Bush, Bill Clinton, George W. Bush, and Barack Obama. Dennis Ricci explores competing explanations for why a presidential administration will decide to intervene in one situation and not in another. Since both the situations and decision makers vary across cases, Ricci analyzes explanations for intervention by asking: Why intervene? Why use force or not? Under what conditions or circumstances are intervention decisions made?