The Other Travelers: American Jihadists Beyond Syria and Iraq

The Other Travelers: American Jihadists Beyond Syria and Iraq


Authored by Seamus Hughes, Emily Blackburn, and Andrew Mines
August 2019

This study builds on previous work by the Program's researchers on Americans who travel to join jihadist groups. Using interviews with law enforcement officials and thousands of pages of legal documents, the authors found 36 individuals who traveled or attempted to travel to join jihadist groups outside of Syria and Iraq from 2011 to 2019. These "Other Travelers" predominantly traveled to longstanding hotspots of jihadist activity: the Af-Pak region, Somalia, and Yemen. As the landscape of the Salafi-jihadist movement continues to evolve, this report contributes to the field's understanding of the broader foreign fighter phenomenon.



Encrypted Extremism: Inside the English-Speaking Islamic State Ecosystem on Telegram

Encrypted Extremism


Authored by Bennett Clifford and Helen Powell
June 2019

Telegram, an online instant messaging service popular among adherents of the Islamic State (IS), remains vital to the organization’s ecosystem of communications. The platform’s functional affordances, paired with relatively lax enforcement of Telegram’s terms of service (ToS), offers IS sympathizers a user-friendly medium to engage with like-minded supporters and content. This report examines 636 pro-IS Telegram channels and groups that contain English-language content collected between June 1, 2017 and October 24, 2018. While this time-bound and linguistically limited sample represents a sliver of the pro-IS ecosystem on Telegram, the subsequent findings have important implications for policymakers assigned to the dual tasks of countering IS’ online foothold and engaging with service providers like Telegram.




Salafism in America: History, Evolution, Radicalization

Salafism in America: History, Evolution, Radicalization


Authored by Alexander Meleagrou-Hitchens
October 2018

Salafism, a complex and multifaceted conservative global Islamic movement, has become a topic of increased interest among a range of scholars over the last decade. Although worthy of study in its own right, the Salafi movement often attracts attention because certain components of it provide much of the ideological inspiration for jihadist groups including al-Qaeda and the Islamic State (IS). This study is one of the first to focus solely on Salafism in the United States. Drawing on multiple primary sources, including interviews with leading American Salafis, it provides an overview of the history, evolution, and contours of the movement in America. In doing so, it also offers insights on the genesis of jihadism in the U.S.



The Travelers: American Jihadists in Syria and Iraq

The Travelers: American Jihadists in Syria and Iraq


Authored by Alexander Meleagrou-Hitchens, Seamus Hughes, and Bennett Clifford
February 2018

This study reflects the most comprehensive, publicly available accounting of Americans who traveled to join jihadist groups in Syria and Iraq since 2011. It identifies 64 travelers, the largest available sample to date. These individuals, and their stories, were uncovered during a multi-year investigation. Authors interviewed law enforcement officials, prosecutors, and defense attorneys, and attended relevant court proceedings. Additionally, they reviewed thousands of pages of legal documents, filing information requests and federal court motions to unseal records where necessary. Finally, the authors conducted several interviews with American travelers who returned from the territories held by the Islamic State (IS).



Digital Decay: Tracing Change Over Time Among English-Language Islamic State Sympathizers on Twitter

Digital Decay


Authored by Audrey Alexander
October 2017

Until 2016, Twitter was the online platform of choice for English-language Islamic State (IS) sympathizers. As a result of Twitter’s counter-extremism policies - including content removal - there has been a decline in activity by IS supporters. This outcome may suggest the company’s efforts have been effective, but a deeper analysis reveals a complex, nonlinear portrait of decay. Such observations show that the fight against IS in the digital sphere is far from over. In order to examine this change over time, this report collects and reviews 845,646 tweets produced by 1,782 English-language pro-IS accounts from February 15, 2016 to May 1, 2017. This study finds that Twitter’s policies hinder sympathizers on the platform, but counter-IS practitioners should not overstate the impact of these measures in the broader fight against the organization online.




Fear Thy Neighbor: Radicalization and Jihadist Attacks in the West

Fear Thy Neighbor: Radicalization and Jihadist Attacks in the West


Authored by Lorenzo Vidino, Francesco Marone, and Eva Entenmann
June 2017

This report examines all jihadist-motivated terrorist attacks carried out in Europe and North America since the declaration of the Caliphate by the Islamic State group in June 2014. By analyzing the 51 attacks and their perpetrators, this study constitutes the first comprehensive account of attacks carried out during the past three years.


Not Just The Caliphate: Non-Islamic State-Related Jihadist Terrorism in America

Not just the caliphate


Authored by Sarah Gilkes
December 2016

While there has been a relative surge in the number of U.S. persons radicalized and recruited by the Islamic State in the last five years, other jihadist organizations, primarily al-Qaeda, remain popular and active. This suggests that, while group affiliation matters, the draw of the wider Salafi-jihadist ideology that al-Qaeda, IS, and other like-minded groups adhere to is equally important when analyzing the jihadist threat to America.

Cruel Intentions: Female Jihadists in America

Cruel intentions


Authored by Audrey Alexander
November 2016 

The self-proclaimed Islamic State and other jihadist actors have identified several unique roles for Western women in their radicalization and recruitment efforts. This report finds that, while few conduct violent plots, many disseminate propaganda, donate resources, or travel abroad to offer their support. This report uses a wealth of primary and secondary data to examine the efforts of 25 jihadi women in America from January 2011 to September 2016. 

ISIS in America: From Retweets to Raqqa

Isis in america


Authored by Lorenzo Vidino and Seamus Hughes
December 2015

The report consists of two parts. The first examines all cases of U.S. persons arrested, indicted, or convicted in the United States for IS-related activities. This section also looks at the cases of other Americans who, while not in the legal system, are known to have engaged in IS-inspired behavior.

The second examines various aspects of the IS-related mobilization in America. It analyzes the individual motivations of IS supporters, the role of the Internet—in particular, social media—in their radicalization and recruitment processes, whether their radicalization took place in isolation or with like-minded individuals, and the degree of their tangible links to IS.

Countering Violent Extremism in America

Isis in america


Authored by Lorenzo Vidino and Seamus Hughes
June 2015

This report examines the status of CVE in the United States and explores what lessons and experiences the European CVE community can offer their American counterparts. The report dives into past efforts to develop local CVE frameworks at the city-level, targeted interventions, and the existing debate within American Muslim communities. The authors cover current challenges for CVE in America, and offer reccomendations for academics, policymakers, and practitioners. 

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