Somalia conflict: Al-Shabab 'collects more revenue than government' - BBC News
Al-Shabaab faction pledges allegiance to ISIS | CNN
Humanitarians warn against adding al-Shabab to UN sanctions list | Devex
Death of al-Shabab Boss Godane Could See Jihadis Returning to U.S.
Somalia: Al-Shabab Attacks Kill 17
Al-Shabaab in Somalia: The History and Ideology of a Militant Islamist Group - Kindle edition by Hansen, Stig Jarle. Politics & Social Sciences Kindle eBooks @ Amazon.com.
Al-Shabab | Council on Foreign Relations
Al Shabaab Commander Killed in US Drone Strike: Somalia
What You Need to Know to Understand al-Shabaab | Institute for Global Change
Al-Shabab Attacks Military Bases in Southern Somalia