Introduction
The Introduction identifies US regime change as the subject of inquiry and outlines the book’s emotion-based argument. It observes that US regime change decisions remain puzzling because studies show that their effects are typically detrimental to both regime changer and target state. After canvassing existing explanations and their shortcomings, the chapter turns to the book’s core claim: when US presidents experience emotional frustration, that is, when the combination of hegemonic expectations, target state obstructions perceived as stemming from hatred, and negative affect is present, regime change becomes an attractive tool to them for emotional amelioration. After defining five key attributes of regime change and specifying the universe of cases, the chapter then discusses the book’s methodological approach and its use of primary sources for the empirical analysis of five regime change episodes in the history of US foreign policy. The Introduction closes with a brief outline of subsequent chapters.