"even though they didn't have any weapons of mass destruction", So Obvious you know nothing.  While at the Iran Iraq Wars as a U.S. Army Special Forces Officer, with previous training and experience with Nuclear (Weapons) Physics and Physiology, Biological Weapons (Epidemiology), and Chemical Weapons (School, and experience at Site 59 Clausen Federal Republic of West Germany, and later on Operation Steel Box and Golden Python), during the Iran Iraq Wars U.S. Ally Iraq got Chemical Weapons from "unknown sources", as new U.S.S.R. 122mm and 130mm projectiles, that instead of being painted U.S.S.R. colors of Chemical Munitions were painted with U.S. Chemical Munitions colors, the bulk containers of Chemical Weapons Agents to fill those Artillery Projectiles were also U.S. Chemical Agents Identification Markings. 

continued.