The Islamic State has lost substantial amounts of territory but continues to conduct and inspire attacks around the world. This report assesses the threat the Islamic State poses to the United States and examines strategies to counter the group and prevent a resurgence of the Islamic State or other Salafi-jihadist groups.

A Foreign Affairs Best Book of 2019 “It’s a small miracle that a writer as good as James Verini witnessed the battle of Mosul.… It will take its place among the very best war writing of the past two decades.” —George Packer James Verini arrived in Iraq in the summer of 2016 to write about life in the Islamic State. He stayed to cover the jihadis’ last great stand, the Battle of Mosul, not knowing it would go on for nearly a year. This “urgent, scalding, hallucinatory work of war reportage” (Patrick Radden Keefe) takes the reader into the conflict against the most lethal insurgency of our time.

This report assesses the threat the Islamic State poses to the United States and examines strategies to counter the group.

Drawing from 140 recently declassified documents, this report comprehensively examines the organization, territorial designs, management, personnel policies, and finances of the Islamic State of Iraq (ISI) and al-Qa‘ida in Iraq. Analysis of the Islamic State predecessor groups is more than a historical recounting. It provides significant understanding of how ISI evolved into the present-day Islamic State and how to combat the group.

How big is the threat posed by American ISIS supporters? How many Americans have joined ISIS and how many want to return to the United States? Compared to participation by Americans in other jihadist groups, the scale of American involvement in jihadist activity today is unprecedented. This book, from one of the leading counter-terror centres, draws on first-hand interviews with former American Islamic State members and law enforcement officials who tracked them, and includes detailed analysis of the court cases against them and their social media presence. Homegrown reveals how and why ISIS was able to radicalize and recruit a new generation of jihadist sympathizers in America.

A comprehensive history of ISIS based on insider accounts and secret communications few outsiders have seen

So-called Islamic State began to appear in what it calls Khorasan (Afghanistan, Pakistan, Central Asia, Iran and India) in 2014. Reports of its presence were at first dismissed as propaganda, but during 2015 it became clear that IS had a serious presence in Afghanistan and Pakistan at least. This book, by one of the leading experts on Islamist insurgency in the region, explores the nature of IS in Khorasan, its aim and strategies, and its evolution in an environment already populated by many jihadist organisations. Based on first-hand research and numerous interviews with members of IS in Khorasan, as well as with other participants and observers, the book addresses highly contentious issues such as funding, IS's relationship with the region's authorities, and its interactions with other insurgent groups. Giustozzi argues that the central leadership of IS invested significant financial resources in establishing its own branch in Khorasan, and as such it is more than a local movement which adopted the IS brand for its own aims. Though the central leadership has been struggling in implementing its project, it is now turning towards a more realistic approach. This is the first book on a new frontier in Islamic State's international jihad.