Ian Shapiro, Sterling Professor of Political Science and Global Affairs at Yale, delivers lecture sixteen of his DeVane course Power and Politics in Today's World, recorded in fall 2019. He examines how and why NATO intervened in Libya and traces the origins of that decision. The lecture weighs what the Libya case means for the future of humanitarian intervention as a doctrine, for the stability and political shape of the Middle East, and for whether the United States can still act as a force for good abroad. Shapiro connects the discussion back to the course's broader arc, running from the optimism after communism's collapse in the early 1990s to today's politics of fear and resentment. The talk runs seventy eight minutes and was open to Yale students and the public, part of a lecture series named for former Yale College dean William Clyde DeVane.