 Because, for instance, Al Qaeda still hasn't announced the death of Amin al-Zawahiri, its last emir, or the deaths of some other key leaders. They've done this for various reasons. In the case of Zawahiri, he was killed in Kabul. He was being sheltered by the Afghan Taliban. So Al Qaeda doesn't want to put pressure on the Afghan Taliban. It also doesn't want to bring attention that its next leader is