High Quality Content by WIKIPEDIA articles! Iran is not known to currently possess weapons of mass destruction (WMD) and has signed treaties repudiating the possession of weapons of mass destruction including the Biological Weapons Convention, the Chemical Weapons Convention, and the Nuclear Non-Proliferation Treaty (NPT). Over 100,000 Iranian troops and civilians were victims of chemical weapons during the 1980s Iran–Iraq War. On ideological grounds, a public and categorical religious decree (fatwa) against the development, production, stockpiling and use of nuclear weapons has been issued by the supreme leader of the Islamic Republic Ali Khamenei along with other clerics, while it is supported by others in the religious establishment. Iran has stated its uranium enrichment program is exclusively for peaceful purposes. The IAEA has confirmed the non-diversion of declared nuclear material in Iran, but has also said it "needs to have confidence in the absence of possible military dimensions to Iran’s nuclear programme." The IAEA has pointed out that Iran is not implementing the requirements of UN Security Council Resolutions and needs to cooperate to clarify outstanding issues and meet requirement to provide early design information on its nuclear facilities.