Steve Nolt is a history professor at Goshen College in Goshen, Ind., with formal training as a historian in the areas of U.S. immigration and ethnic history and American religious history. He also has significant personal and professional interest in Mennonite and Amish history and thought. An Anabaptist specialist, he has written extensively about Mennonites, Amish and […]

Maurice Isserman is a professor of history at Hamilton College in Clinton, N.Y., and co-author of America Divided: The Civil War of the 1960s. He is regarded as one of the leading historians on the era.

Gregory Lee Cuéllar is curator for rare books and manuscripts at Texas A&M University’s Cushing Library in College Station, Texas. He can discuss Mexican colonial history, the Mexican immigrant experience and crypto-Judaism (practicing Jews publicly passing as Catholic) in the New Spain.

CNN.com maintains an interactive map that shows the names and hometowns of all U.S. military casualties from the wars in Iraq and Afghanistan.

The Brookings Institution is a nonprofit public policy organization based in Washington, DC.

Mark S. Hamm is a professor of criminology at Indiana State University in Terre Haute who specializes in terrorism, in particular right-wing extremism.

Stuart A. Wright is chair of the sociology department at Lamar University in Beaumont, Texas. He has written numerous books and articles on religion and violence. He is an expert on government raids on small religious groups suspected of being extremists, like the Branch Davidians. He has studied the relationship between governments, law enforcement officials […]

David Schanzer is director of the Triangle Center on Terrorism and Homeland Security in Durham, N.C. He is also a visiting professor of public policy at Duke University and an adjunct professor of public policy at the University of North Carolina.

Ami Pedahzur is a government professor at the University of Texas at Austin who has written on political extremism and terrorism, in particular in Israel. His most recent book is Jewish Terrorism in Israel (2009).