Evolution of Terrorism: How Society and Institutions Are Adapting

Last week's attack on a well-fortified hotel compound left 21 civilians dead. The al-Qaeda-affiliated Al Shabaab terror group claimed responsibility, as it did for a 2013 attack shopping mall attack. Meanwhile, having lost most of its territory in Iraq and Syria, the so-called Islamic State may be morphing to direct and inspire attacks from the cloud. How are terror groups evolving, and how can...