This Strategic Studies Institute book provides a comprehensive research guide to radical Islamist English-language online magazines published between April-May 2007 and November 2016, as well as Islamic State eBooks published between November 2012 and November 2015, and a number of assorted radical Islamist news magazines, reports, and pocketbooks. A comparative analysis of Inspire and Dabiq magazine issues are provided along with strategic insights related to al-Qaeda and Islamic State online magazine clusters and their differing strategic approaches as articulated in these magazines. Finally, policy response options, utilizing a targeting schema leveraging the five stages of the magazine life-cycle process: environmental motivators, production, end product, distribution, and outcomes, are discussed.