U.S. President Barack Obama has made a sharp U-turn on his two-year-old promise to move the CIA's controversial drone program out of the "legal shadows," according to new reporting by the Huffington Post.

In a May 2013 speech at the National Defense University, Obama vowed to move the "out of the covert shadows and into the relative sunlight of the Defense Department," writes HuffPo reporter Ali Watkins, who notes that "[d]rone critics greeted the announcement with cautious optimism, hoping that a Pentagon-run drone program would be more transparent and allow more oversight of targeted killings."

But sources tell Watkins that "[b]ehind closed doors, all of that has changed."