Think Progress has the scoop.
A formerly classified 1995 Pentagon intelligence document titled “Possible Use of Phosphorous Chemical” describes the use of white phosphorus by Saddam Hussein on Kurdish fighters: "IRAQ HAS POSSIBLY EMPLOYED PHOSPHOROUS CHEMICAL WEAPONS AGAINST THE KURDISH POPULATION IN AREAS ALONG THE IRAQI-TURKISH-IRANIAN BORDERS. [...] IRAQI FORCES LOYAL TO PRESIDENT SADDAM ((HUSSEIN)) MAY HAVE POSSIBLY USED WHITE PHOSPHOROUS (WP) CHEMICAL WEAPONS AGAINST KURDISH REBELS"
Of course! If our enemies do it, it's called "chemical weapons" or "torture" or "terrorism". If we do it, it's called "illumination" or "intelligence gathering" or "fighting for liberty".