Ayman al-Zawahiri, September 2015

“We call for cooperation with Abu Bakr al-Baghdadi and his brothers to push back the attack of the enemies of Islam.”Tim Lister, “Al Qaeda leader to ISIS: You’re wrong, but we can work together,” CNN, September 15, 2015, http://www.cnn.com/2015/09/14/middleeast/al-zawahiri-al-qaeda-isis-olive-branch/.