George Perkovich, vice president for studies at the Carnegie Endowment for International Peace and a co-author of a new report on Iraq’s weapons of mass destruction (WMD), says that administrat…

Matthew Sherman, former deputy senior adviser and director of policy to Iraq ’s Ministry of Interior, discusses the influence of militias, U.S. counterinsurgency efforts, and Iraq ’s rise of organize…

Matthew Levitt, an expert on terrorism and the author of a new book critical of Hamas, says it is unlikely Hamas is going to change now that it controls the Palestinian government. "Being the governm…

Philip K. Verleger Jr., an energy policy expert, says meetings of natural gas exporting countries in Qatar are not likely to be very significant in short term, but in time “could be very significant.”

William Chandler, senior policy analyst for energy and climate at the Carnegie Endowment for International Peace, says that emissions-trading programs have achieved mixed results and should be readju…