Stephen Wayne, a Georgetown University expert on the American presidency, has written 11 books, including The Road to the White House. As part of his research on the 2008 presidential-nomination process, Wayne is conducting an evaluation of U.S. Sen. Hillary Rodham Clinton, a Democrat from New York. He discussed his preliminary assessment with foreign-affairs columnist [...]

Col. (ret.) Lawrence B. Wilkerson, who was former Secretary of State Colin Powell’s chief of staff from 2002-2005, currently teaches at The College of William & Mary. He shared his recommendations for the next U.S. president with foreign-affairs columnist John C. Bersia.

Thomas Mann, a specialist on campaigns and elections, is a senior fellow in governance studies and holder of the W. Averell Harriman Chair at the Brookings Institution in Washington, D.C. He discussed developments in the U.S. presidential campaign with foreign-affairs columnist John C. Bersia.

Stephen Sloan, the author or co-author of Terrorism: The Present Threat in Context, Corporate Aviation Security and other books, is a professor and fellow at the University of Central Florida. He discussed developments in the alleged plot to target New York City’s JFK International Airport with foreign-affairs columnist John C. Bersia.