Sure, but, the UN force, should not have stopped when it did. Had Saddam been deposed the second invasion would not have been necessary and the Kurd allies put into a deplorable situation of being deserted. https://en.wikipedia.org/wiki/Iraq_and_weapons_of_mass_destruction From wiki, but available at multi sources. The following is selected excerpts: "Iraq's military arsenal included weapons of mass destruction (biological and chemical) starting from 1960s, effectively ending with its near total destruction in the 1990s. Iraq used chemical weapons on multiple occasions, both domestically and in the war against Iran. After the first Gulf War in 1991, the UN Security Council required Iraq to eliminate its chemical, biological and previously unknown nuclear weapon programs under UN verification. Saddam Hussein, was internationally condemned for his use of chemical weapons during the 1980s campaign against Iranian and Kurdish civilians during and after the Iran–Iraq War. In the 1980s, Saddam pursued an extensive biological weapons program and a nuclear weapons program, though no nuclear bomb was built. After the Persian Gulf War, the United Nations located and destroyed large quantities of Iraqi chemical weapons and related equipment and materials throughout the early 1990s, with varying degrees of Iraqi cooperation and obstruction."