What do leaders need to know in order to be effective? Carnes Lord--a political scientist with extensive experience at high levels of American government--here offers witty and trenchant counsel to both leaders and the citizens who elect them. Exploring such issues as leadership in war and crises, diplomacy, intelligence, the media, and the role of political advisors, Lord enumerates the major challenges confronting modern leaders and offers practical advice on how leaders should deal with them. The Modern Prince anticipates--at times in startling fashion--the situation facing the Donald Trump administration in an ongoing political drama that has few precedents in the history of the republic.