Israeli Prime Minister Benjamin Netanyahu speaks before a joint meeting of Congress on Capitol Hill in Washington on Tuesday. Netanyahu said the world must unite to "stop Iran's march of conquest, subjugation and terror." House Speaker John Boehner of Ohio (left) and Sen. Orrin Hatch, R-Utah, listen. Andrew Harnik/AP hide caption

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A playground is seen in London, outside an address where Kuwaiti-born London computer programmer Mohammed Emwazi is believed to have lived. Emwazi has been identified as masked ISIS militant "Jihadi John." Niklas Halle'n/AFP/Getty Images hide caption

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"It is a waste of time. We will not allow a conference to take place. It won't happen," Senate Minority Leader Harry Reid said Thursday about the possibility of the two chambers reconciling Department of Homeland Security funding bills. J. Scott Applewhite/AP hide caption

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Relatives of victims of the Sept. 11 attacks are periodically flown down to Guantanamo Bay, Cuba, to witness court proceedings against five men accused of plotting the attacks. For the witnesses of the most recent court session, the experience raised questions about justice, humanity and the ethics of the death penalty. Joe Raedle/Getty Images hide caption

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