Co-founder of Hamas along with Sheikh Ahmed Yassin. Rantisi served as Hamas's political leader and opposed any cooperation with the Israeli government, instead insisting that the only acceptable outcome was the establishment of a Palestinian state including... Read more

Abu Musab al-Zarqawi was the leader of ISIS's predecessor organization, Al Qaeda in Iraq. Al Qaeda in Iraq split from the central Al Qaeda terrorist organization in 2004. As leader of Al Qaeda in Iraq, Zarqawi emphasized... Read more

Ahmad Abousamra was a Syrian-American extremist, foreign fighter and editor-in-chief of ISIS's English language publication, Dabiq Magazine, which focused on recruiting Westerners as foreign fighters. He was killed by a U.S. drone strike in Syria in January... Read more

Ahmad Khan Rahimi (b. 1988) is an Afghan-born U.S. citizen who detonated two pipe bombs in the Chelsea neighborhood of New York City on September 17, 2016, injuring 30 people. He placed a third bomb in New... Read more

Alexander Dugin is a far-right, ultra-nationalist Russian philosopher and political scientist who is the founder of the "Eurasian movement," which theorizes that Russia, with the help of former Soviet bloc countries and Central European nations, will challenge... Read more

Anjem Choudary is a British Islamist activist who founded a number of Salafist institutions and openly supported ISIS's activities. He has influenced radical individuals throughout Europe and America. In 2016, he was convicted in the UK undersection... Read more