ROBERT KAGAN is a senior fellow at the Brookings Institution and the author, most recently, of The Return of History and the End of Dreams. He writes a monthly column for the Washington Post and is a contributing editor at the Weekly Standard and the New Republic. His previous books include Dangerous Nation: America’s Place in the World from its Earliest Days to the Dawn of the 20th Century, winner of the 2008 Lepgold Prize and a 2007 Finalist for the Lionel Gelber Prize, and Of Paradise and Power. He served in the State Department from 1984 to 1988 as a member of the Policy Planning Staff, as principal speechwriter for Secretary of State George P. Shultz, and as deputy for policy in the Bureau of Inter-American Affairs. He is a graduate of Yale University and Harvard University’s Kennedy School of Government and holds a Ph.D. in American History from American University.