Host Carol Castiel and VOA National Security correspondent Jeff Seldin, talk with Charles Lister, Senior Fellow at the Middle East Institute and author of the recent book “The Syrian Jihad: Al Qaeda, The Islamic State and the Evolution of an Insurgency,” about the factors which fueled the growth of the so-called Islamic State in Syria and the consequences of the US and British decision three years ago against the use of limited military strikes to punish the Assad regime for using chemical weapons on its own people.