This combination image shows 11 of the 26 suspects wanted by Dubai police in connection with the killing of a Hamas commander, Mahmoud al-Mabhouh, in his Dubai hotel room last month. (Click enlargement for more information.) Dubai Ruler's Media Office/AP hide caption

itoggle caption Dubai Ruler's Media Office/AP

Essam el-Erian, a top official with Egypt's Muslim Brotherhood, shown at a news conference at the Brotherhood's Cairo headquarters in January, was among the opposition group's members arrested earlier this month. Amr Nabil/AP hide caption

itoggle caption Amr Nabil/AP

Umar Farouk Abdulmutallab, here in Milan, Mich., was charged in federal court in December with trying to detonate an explosive device on a Dec. 25 flight from Amsterdam to Detroit. U.S. Marshals Service/AP hide caption

itoggle caption U.S. Marshals Service/AP

The building housing the San'a Institute for the Arabic Language in Yemen's capital, where Umar Farouk Abdulmutallab studied. Peter Kenyon/NPR hide caption

itoggle caption Peter Kenyon/NPR

Police officers stand guard at a pro-government rally on Feb. 11 commemorating the anniversary of the 1979 Islamic revolution. Foreign media were banned from covering the opposition protests. Vahid Salemi/AP hide caption

itoggle caption Vahid Salemi/AP

Rashid Khalid (left) and Stuart Eizenstat (right) participate in an Intelligence Squared U.S. debate on U.S.-Israeli relations moderated by John Donvan (center). The debate was held at New York University's Skirball Center for the Performing Arts on Feb. 9. Chris Vultaggio hide caption

itoggle caption Chris Vultaggio