“Avenging the death of our scholars and leaders is a binding obligation on our shoulders that we will never relinquish nor forget no matter how long it takes. By the permission of Allah, you will surely taste the bitter consequences of your actions.”“Al-Shabab names new leader after Godane death in US strike,” BBC News, September 6, 2014, http://www.bbc.com/news/world-africa-29093200.