One of the most powerful Islamic militant groups in Africa, Al-Shabaab exerts Taliban-like rule over millions in Somalia and poses a growing threat to stability in the Horn of Africa. Somalis risk retaliation or death if they oppose or fail to comply with Al-Shabaab-imposed restrictions on aspects of everyday life such as clothing, media, sports, interpersonal relations, and prayer. Inside Al-Shabaab: The Secret History of Al-Qaeda's Most Powerful...