The WP is a much more responsible and accurate article than Wired's sensational summary -- the salient points there are "Video is unencrypted", "Pentagon has tolerated this for years" and "Predator."

Getting back to the actual focus of my comment -- the original article leaps to "obviously, the Iranians have broken our encrypted controls" from an Iranian press release, without bothering to give even speculative support. I consider it far more plausible that something simpler has happened, such as dumb old software failure, or GPS spoofing.