The U.S. military is trying to improve treatment of post-traumatic stress disorder. But many veterans say they're still under pressure to deny they have problems. Here, military personnel attend a presentation on PTSD at Fort Hamilton Army Garrison in Brooklyn, N.Y., in December 2009. Chris Hondros/Getty Images hide caption

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President Obama's remarks about missile defense to Russian President Dmitry Medvedev were meant for his ears only. But they were picked up by a microphone, and have drawn sharp criticism from Mitt Romeny and other Republicans. Obama and Medvedev are shown here on Monday at a nuclear summit in Seoul, South Korea. Jewel Samad/Getty Images hide caption

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Rachel Maddow hosts the nightly news talk show The Rachel Maddow Show on MSNBC. Bill Phelps/Courtesy of the author hide caption

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U.S. officials are looking more closely for signs of state-sponsored terrorism these days. In this attack, Israel blamed Iran for bombing a car belonging to the Israeli Embassy in New Delhi, India, on Feb. 13. The wife of an Israeli diplomat was injured. Iran denied it was involved. Joji Thomas/AP hide caption

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President Obama greets Chinese President Hu Jintao at the start of their meeting in Seoul, South Korea, on Monday. The U.S. president asked the Chinese leader to use his influence with North Korean to discourage that country from launching a rocket next month. Pablo Martinez Monsivais/AP hide caption

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In this 2005 photo, then-Massachusetts Gov. Mitt Romney presents Afghan President Hamid Karzai with a memento at Boston's Logan Airport. Karzai was preparing to speak at Boston University's commencement. Dina Rudick /AP hide caption

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With a new leader in North Korea, the U.S. and South Korea are watching for clues of his policies. But so far tensions have not eased along the demilitarized zone. Here, two North Korean soldiers look across at a South Korean soldier on Dec. 2. Lee Jae-Won/Reuters/Landov hide caption

itoggle caption Lee Jae-Won/Reuters/Landov

The Homeland Security Department's Control System Security Program facilities in Idaho Falls, Idaho, are intended to protect the nation's power grid, water and communications systems. U.S. security officials and members of Congress are convinced a new law may be needed to promote improved cyberdefenses at critical facilities. Mark J. Terrill/AP hide caption

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Army Staff Sgt. Robert Bales, who is accused of killing 16 Afghan civilians, will have the case heard in the military justice system, which has significant differences from the civilian courts. Here, Bales is shown in a training exercise in Fort Irwin, Calif., last August. Spc. Ryan Hallock/AP hide caption

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In this undated photo provided by Yasir Afifi, Afifi shows a GPS monitering device he found on his car in Santa Clara Calif. FBI agents arrived at Afifi's Santa Clara apartment and demanded the return of their property a global positioning system tracking device now at the center of a raging legal debate over privacy rights. Yasir Afifi/AP hide caption

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A U.S. soldier watches members of the Afghan Public Protection Force arrive at a ceremony on the outskirts of Kabul on Thursday. Ahmad Jamshid/AP hide caption

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A vendor talks to attendees at the Border Security Expo in Phoenix, Ariz., next to a display of sophisticated cameras and sensors painted to blend into the desert. Ted Robbins/NPR hide caption

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