Central Intelligence Agency Director John Brennan takes questions after addressing the Council on Foreign Relations on March 11. The CIA has proposed deleting the email of almost all employees after they leave the agency. But some critics are saying a larger portion of the email should be preserved. Chip Somodevilla/Getty Images hide caption

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WikiLeaks founder Julian Assange attends an August news conference at the Ecuadorean Embassy in London. On Thursday, a Swedish appeals court upheld a 2010 detention order against Assange on accusations of sexual assault. John Stillwell/Xinhua/Landov hide caption

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A detainee is escorted in March 2002 by two Army military police at Guantanamo Bay, Cuba. The detainee was being led to the Joint Interrogation Facility to be interviewed by government investigators. Peter Muhly/AFP/Getty Images hide caption

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A Minuteman III missile engine is loaded into a truck for transport to another building for X-raying before being torn down and rebuilt. The Air Force's missile command-and-control structure has been the subject of several recent scandals. Douglas C. Pizac/AP hide caption

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NATO has reported a spike in Russian military activity at sea and in NATO and other western European countries' airspace as tensions have mounted over Ukraine. Here, a Russian military long-range bomber aircraft flies in international airspace on Oct. 29. Royal Air Force/AP hide caption

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BASETRACK Live incorporates photographs, videos and interviews to tell the story of warfare, both at home and abroad. Courtesy of En Garde Arts hide caption

itoggle caption Courtesy of En Garde Arts