Ayman al-Zawahiri, September 2015

“[I]f there is fighting between the crusaders, the Safavids, and the secularists, and any group from the Muslims and the mujahideen, including the group of Abu Bakr al-Baghdadi and those with him, then our only choice is to stand with the Muslim mujahideen, even if they are unjust to us.”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/.