Read The Los Angeles Times obituary, “Televangelist Oral Roberts dies; pioneering preacher of the ‘prosperity gospel’ was 91.”

Scott Atran is an adjunct professor in the psychology department at the University of Michigan and is associated with its Research Center for Group Dynamics. He can discuss jihadi movements and al-Qaeda. He is also the author of In Gods We Trust: The Evolutionary Landscape of American Religion (2004).

A July 2007 survey by the Pew Global Attitudes Project finds support for suicide bombing dropping in Muslim countries.

Read a 2005 survey of 17,000 Muslims in 17 countries by the Pew Global Attitudes Project. Among its findings is that many Muslims see extremism as a threat to their countries.

Bassam Tibi is a professor of international relations at the University of Göttingen in Göttingen, Germany, and an expert on radical fundamentalism in political Islam throughout Europe and the Middle East.

M. Hakan Yavuz is an assistant professor in the political science department at the University of Utah in Salt Lake City. He has written about Islamic movements in Turkey and Kurdish nationalism in Turkey.

Joel Gordon is a history professor at the University of Arkansas. He is an expert on religion and politics in the Arab world.

Andrew March is an assistant professor of political science at Yale University in New Haven, Conn. He is at work on a book about Islam and citizenship in liberal democracies and is an expert on Islam and democracy.

Stephen Schwartz is executive director of the Center for Islamic Pluralism, which says it promotes moderate Muslim views. Schwartz has taken credit for coining or popularizing the term.