“Perkins makes a significant contribution with this well-written and interesting book. Surveying a far broader range of historical circumstances than most scholars attempt, he arrives at sweeping conclusions relating to both international warfare and domestic violence. His emphasis on elements of political culture, notably rule of law and transparency, deserves a prominent place in discussions on how to preserve governments and foster peace.”

SPENCER WEARTauthor of Never at War: Why Democracies Will Not Fight One Another

“Ivan Perkins has identified a momentous yet underappreciated development in human history and has assembled a vast amount of evidence and a coherent narrative around it. Vanishing Coup is a major contribution to history and political science and a fascinating read.”

STEVEN PINKERHarvard University; author of The Better Angels of Our Nature: Why Violence Has Declined