The Islamic State of Iraq (ISI; Arabic: دولة العراق الإسلامية Dawlat al-ʿIrāq al-ʾIslāmiyyah) was a Salafi jihadist militant organization that fought the forces of the U.S.-led coalition during the Iraqi insurgency. The organization aimed to overthrow the Iraqi federal government and establish an Islamic state governed by Sharia law in Iraq.
Islamic State of Iraq traces its origins to Jama'at al-Tawhid wal-Jihad (JTJ) group, which was formed by the Jordanian national Abu Musab al-Zarqawi in Jordan in 1999. Al-Zarqawi led the group, until his death in June 2006.