"A ... history tracing civil war, the least understood and most intractable form of organized human aggression, from ancient Rome through the centuries to present day"--

DAVID ARMITAGE is the Lloyd C. Blankfein Professor of History at Harvard University, where he teaches intellectual history and international history, and former Chair of Harvard's History Department. His many publications include The Ideological Origins of the British Empire (2000) and The Declaration of Independence: A Global History (2007).

Social media: Twitter @davidrarmitage