[Enigma]

An American fighter jet shot down an Iranian drone as it was flying over Iraq, U.S. military sources in Baghdad tell Danger Room. Details of the previously-unreported shoot-down, which occurred last month, are still sketchy. But we do know that American commanders have long accused Tehran of supplying weapons and training to all sorts of Iraqi militant groups. Shi'ite militias fired Iranian rockets at U.S. troops in Iraq, according to the American military; Sunni militias allegedly used Iranian armor-piercing bombs to reduce U.S. vehicles to ribbons.

http://blog.wired.com/defense/2009/0...d.html?ref=fp8