Still, big does not always mean organized. Juan Zarate, CBS News' Senior National Security Analyst, said that ISIS is probably less well-organized than pre-9/11 al Qaeda, which spent years ...

UNITED NATIONS -- Al Qaeda's global network remains "remarkably resilient" and poses a greater threat than the Islamic State of Iraq and Syria (ISIS) in several regions, including Yemen and ...

Al-Qaeda leader denounces Isis 'madness and lies' as two terrorist groups compete for dominance. Al-Qaeda is aiming to capitalise on heavy Isis losses to gain fighters and support.

Al-Qaida and ISIS differ on whether to emphasize the war on the Shiites and how much to cooperate with non-jihadist groups. Finally, some in the Islamic State embrace apocalypticism , which al ...

Ayman al-Zawahiri, the Egyptian doctor who replaced Osama bin Laden as the head of al Qaeda four years ago, in a new audio message accused ISIS top leader Abu Bakr al-Baghdadi of “sedition ...

ISIS leader al-Baghdadi declaring himself caliph, as referenced by Coulibaly, was widely seen as a direct challenge to al-Qaida honcho Ayman al-Zawahiri’s leadership of the global jihadist movement.

Its been 23 years since al Qaeda hit the U.S. in the deadliest terrorist attack in history and sparked the Global War on Terror, though terrorism remains a major security threat across the globe.

Al Qaeda and ISIS still want to attack America — what can we expect? by Colin P. Clarke and Tore R. Hamming, Opinion Contributors - 07/25/22 1:30 PM ET ...

Isis, which calls itself the Islamic State (Isis), and al-Qaeda’s Syrian affiliate, Jabhat al-Nusra, have been engaged in bitter fighting for more than a year in an attempt to dominate the ...

After al-Baghdadi’s death, how the U.S. can prevent an ISIS resurgence Oct 28, 2019 6:40 PM EDT ...

In this Oct. 27, 2019, file photo, people look at a destroyed houses near the village of Barisha, in Idlib province, Syria, after an operation by the U.S. military which targeted Abu Bakr al-Baghdadi.

US and Syrian forces have captured an ISIS leader, Khaled Ahmed al-Dandal, who helped other terrorists when they escaped a detention facility in Syria, US Central Command said Tuesday.