FILE - In this Jan. 31, 2010, file photo, an unmanned U.S. Predator drone flies over Kandahar Air Field, southern Afghanistan, on a moon-lit night. The White House has a released a version of President Barack Obama’s three-year-old directive on the use of lethal force against terrorists overseas, laying out what it says are safeguards to minimize civilian deaths and errant strikes while preserving the capability to take quick action with drone attacks and other means.(AP Photo/Kirsty Wigglesworth, File)

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