Skip to content

News

Exploring the gap between the fear of terrorist recidivism and the evidence

An article written for the journal CTC Sentinel by Thomas Renard, working for the Egmont Institute in Belgium

Two recent attacks in London, in November 2019 and February 2020, by two convicted terrorists released from prison resulted in a surge of concern about terrorist recidivism. However, statistics and the academic literature suggest that, on the contrary, terrorists are unlikely to relapse into violent extremism. A review of the judiciary files of 557 jihadi terrorist convicts in Belgium, spanning the three decades from 1990, confirms that less than five percent reengaged in terrorist activities. These findings bear significant implications for counterterrorism policies broadly and for sentencing and post-penitentiary measures more specifically.

Fear of terrorist recidivism

The fear that terrorist offenders could go back to their ‘old ways’ after their release from prison is widely shared among security services and the public. Two recent attacks have just added to this fear. On November 29, 2019, Usman Khan stabbed two people to death near London Bridge, around a year after his release from prison. He had been sentenced in 2012 for planning terrorist activities. On February 2, 2020, Sudesh Amman was shot dead by police shortly after he started stabbing passersby in Streatham, South London, only 10 days after his release from prison. He had been convicted in November 2018 to 40 months in jail for possession and dissemination of terrorist material, in connection with the Islamic State.

Security concerns

For more than two years, European security services have been raising concerns about the planned release of hundreds of jihadis from prison. This is a “worrying threat that we are taking very seriously,” a European official told Agence France-Presse in early 2018. In its annual report published in 2018, the Belgian intelligence service, VSSE, warned of a potential new wave of terrorism resulting from a “recidivism surge” among released extremists. The report observed that “many” terrorists convicted in Belgium between 2001-2011 had reoffended, while highlighting a “current and persistent trend of recidivism” among terrorist offenders. Meanwhile, European prison and probation officers have discussed this issue on several occasions, in the context of the E.U.-wide Radicalisation Awareness Network (RAN).

Read the complete article here.

Related News

Keep up to date with the latest developments, stories, and updates on probation from across Europe and beyond. Find relevant news and insights shaping the field today.

New

CEP

Newsletter October 2026 out now

29/10/2026

New

Violent Extremism

Understanding Youth Radicalisation: What Can Probation Services Do? | New Report from CEP’s Expert Group

27/10/2026

In recent decades, the violent radicalisation of juveniles and young adults has become a pressing concern for policymakers, researchers, practitioners, and communities worldwide. While considerable attention has been devoted to psychological vulnerabilities, socio-economic marginalisation, and community-level influences, the broader context in which violent radicalisation develops is often overlooked. At the same time, the increasing involvement of young people in violent extremist offences highlights the urgent need for effective prevention efforts. Addressing youth radicalisation has become a complex and evolving challenge for families, educators, mental health professionals, law enforcement agencies, probation services, and security authorities.

Recap

Probation in Europe

Reflections on the European Society of Criminology Conference 2026 | From Criminological Research to Probation Practice

26/10/2026

At CEP, we are fascinated by research from across Europe and beyond, and by helping it reach the people who can use it. Ruth Armstrong, CEP Research and Policy Officer, went to the 26th Annual Conference of the European Society of Criminology (EuroCrim 2026 – Working Group on Community Sanctions and Measures) that took place in Warsaw, Poland, from 9–12 September 2026.

Against a backdrop of overcrowded prisons and net-widening (with ever more people drawn into supervision), three questions kept coming up in the research: how time shapes justice, what we mean by success, and how we define harm.

New

Technology

Registration deadline approaching: Join CEP’s final workshop of 2026 on technology in probation

22/10/2026

📢 Have you registered yet? CEP’s final workshop of 2026 takes place on 24 November in Barcelona, bringing together professionals to explore how technology is being used across probation services in Europe.

The Workshop on Alternatives to Detention and Technologies: Deep Diving into New Trends will look beyond artificial intelligence to examine the different ways technology is shaping probation practice, from staff training to working with clients and collaborating with other criminal justice partners.

Recap

Directors General Meetings

CEP Leadership Excellence Training: strengthening leadership and cooperation across Europe

22/10/2026

The CEP Leadership Excellence Training, held on 20–21 October in Zagreb, Croatia, brought together Directors General and senior probation managers from 11 European countries for a two-day interactive programme focused on leadership, communication, staff development, and international cooperation.

New

CEP

Call for Proposals: Evaluation of CEP Expert Groups

21/10/2026

On behalf of Ms. Jana Špero Kamenjarin, CEP Secretary General, it is my pleasure to invite you to submit a proposal to conduct an evaluation within the CEP work programme.

Subscribe to our bi-monthly email newsletter!