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

The Abu Sayyaf Group (ISIS Philippines), also referred to as ISIS East Asia, is a conglomeration of smaller Filipino Islamist groups which pledged allegiance to ISIS starting in 2014. The groups have attracted Western fighters, including from... Read more

Adrenochrome is a real chemical compound produced by the oxidation of adrenaline. It is also a fictionalized drug in works by authors like William Burroughs and Hunter S. Thompson. QAnon believers claim that the elite, particularly in... Read more

The Afghan mujahideen were the religiously-motivated insurgents who banded together to oppose the Soviet invasion of Afghanistan in 1979. Most of the major leaders in Islamist extremist groups initially trained, fought and rose to prominence during this... 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