Sofia Koller

Working on CVE & CT @FightExtremism @CEP_Germany | former @dgapev | focus on 🇩🇪 🇫🇷 & (returning) foreign fighters | @KingsCollegeLon alumna

[Sofia Koller @sofia_koller]

Six years after #Germany started a more systematic prosecution of #femalereturnees, almost 30% women have received their final verdict. In my new policy paper, I present key developments of their prosecution, results and a list of 40 convicted returnees.

[CEP @FightExtremism]

ICYMI: Last week, CEP released a new policy paper by @sofia_koller examining the prosecution of women who returned to Germany after traveling to Iraq and Syria to join terrorist organizations such as the Islamic State (ISIS). 🔖 Bookmark to read!
https://t.co/veIM0e1don

[CEP @FightExtremism]

CEP Senior Research Analyst @sofia_koller discusses the situation in Syria and Iraq, and the transfer and repatriation of IS-linked foreign terrorist fighters, with @Daniel_Glaus for @srfnews.

Watch the full interview starting at 06:29 here: https://t.co/FoBhqKZhBl

[Landry Charrier @landry_charrier]

✨ „Sicherheit zwischen Staat und Freiheit“ (@DokumenteDoc). Wie reagieren 🇩🇪 und #Frankreich auf islamistischen #Terrorismus? Ein Blick auf die politischen und gesellschaftlichen Logiken beider Länder von @sofia_koller: https://t.co/zApxD4FevV

[CEP @FightExtremism]

This timely report from @sofia_koller, on the German experience with repatriating and rehabilitating ISIS returnees, could serve as a warning and a guiding document. Access it here: https://t.co/HxKjU2Wgql
And revisit her report with @iva_mrvova, which provided a look into the situation of alleged ISIS-affiliated men and boys from Germany being held in northeast Syria: https://t.co/OQ0tW7UueJ

[Elsa Trujillo @Elsa_Trujillo_]

🇫🇷🇩🇪 Jean-Noël Barrot se rêverait-il en Jean Monnet ? Alors que le couple franco-allemand bat de l’aile, le ministre des Affaires étrangères ambitionne de proposer mi-mars aux partenaires d’outre-Rhin une "CenIA", pour "Communauté européenne du numérique et de l’IA".

[Adrian Shtuni @Shtuni]

Minors increasingly involved in terrorism cases in #France. Per National Counter-Terrorism Prosecutor (PNAT), Olivier Christen:
- 22 minors charged/indicted in jihadist terror cases monitored by the PNAT in 2025
- They represent 1/3 of the proceedings opened in 2025
- 20% of total individuals charged

[CEP @FightExtremism]

💡Read @sofia_koller's research on this topic.
➡️On the Alleged ISIS-affiliated Men and Boys from Germany Detained in Northeastern Syria, with @iva_mrvova: https://t.co/BJPxS4yu92
➡️ How Germany is Rehabilitating ISIS Returnees, CEP's newest publication: https://t.co/2SJ3y3GEAV

[Colin P. Clarke, Ph.D. @ColinPClarke]

U.S. Intelligence Says at Least 15,000 at Large After ISIS Detention Camp Collapses in Syria https://t.co/zAA7hFifj0

[CEP @FightExtremism]

💡NEW CEP ANALYSIS | Against the backdrop of a deteriorating security situation in Northeast Syria, @sofia_koller examines whether Germany’s rehabilitation framework is equipped to manage the long-term domestic risks posed by former ISIS members.
https://t.co/gwCZyArOIe

[CEP @FightExtremism]

If you missed CEP's last webinar of 2025, fear not!
Expert presentations are now available to watch: https://t.co/jrZUiI9qtp

We heard insightful remarks from Marius Müller-Hennig of @FESonline, key findings of her report on ISIS returnee rehabilitation in Germany from @sofia_koller, and a criminal justice practitioner's perspective from Torben Adams.

[Sofia Koller @sofia_koller]

Very happy to see my study on #rehabilitation of #returnees in #Germany 🇩🇪 out in English! Many thanks to everyone who contributed by answering my questions 👏

[CEP @FightExtremism]

CEP has published @sofia_koller report: "From Caliphate to Prison – How Germany is Rehabilitating ISIS Returnees"

This serves as a starting point to reflect on Germany’s approaches to the rehabilitation of ISIS returnees, discuss ongoing challenges, and present policy recommendations.

Originally published in 2024 in German with @FESonline, now updated and available in English.
Read it here: https://t.co/H1cV7pBBeb

[CEP @FightExtremism]

Thank you to all who attended our webinar!

We heard about returnee experiences and accounts from rehabilitation and reintegration practitioners in Germany. Related report to be released shortly. Watch this space for more.

[Lucas Webber @LucasADWebber]

German authorities foil suspected Islamist terror plot targeting Christmas market in Bavaria

Five suspects arrested (three Moroccans, one Egyptian, one Syrian), per BILD https://t.co/IBV0QN7LeF

[CEP @FightExtremism]

🔔REMINDER | Register for CEP's next webinar!

@sofia_koller presents key insights from her policy paper on Germany's rehabilitation of ISIS returnees. Torben Adams joins to compare Germany’s experience to other affected countries in Euro & Mid East.
https://t.co/naSRGyUrQu

[Lucas Webber @LucasADWebber]

Two Iraqi nationals were arrested in raids across five German cities for allegedly being part of the IS terrorist group between 2016 and 2017 https://t.co/QcQZ33gzFH

[Sofia Koller @sofia_koller]

Oh! I am of course *looking forward to getting to present 😁 (I have it already with me for a looong time 😉)

[Sofia Koller @sofia_koller]

Very much looking forward to finally getting my study on the rehabilitating of #ISIS #returnees in #Germany ✨️ Sign up now for our webinar on Dec 16, 3pm CET

[Sofia Koller @sofia_koller]

Very much looking forward to finally getting my study on the rehabilitating of #ISIS #returnees in #Germany ✨️ Sign up now for our webinar on Dec 16, 3pm CET

[CEP @FightExtremism]

📣Announcing the latest CEP Webinar: From Caliphate to Prison – How Germany is Rehabilitating ISIS Returnees

🗓️Tuesday, December 16, 2025
🕘 9:00-10:30am ET | 15:00-16:30 CET

Join us for a discussion on the German experience and ongoing challenges. https://t.co/naSRGyUrQu

[Lamya Kaddor @LamyaKaddor]

Die Aussagen von Akhmad E. zeigen, welchen Einfluss Perspektivlosigkeit auf die Radikalisierung junger Menschen hat. Die Regierung muss solche Entwicklungen im Blick haben und stärker auf Prävention setzen. Stattdessen wurden Experten aus dem zuständigen Beratergremium geworfen.

[Malik Samuel @Sazedek]

Just confirmed that ISWAP truly has an English-language radio programme operated by a Gambian. Like the Hausa service, the English programme provides a weekly summary of activities from all IS affiliates globally. Previously, ISWAP had largely communicated in Arabic, Kanuri, and Hausa. The addition of English shows the group's determination to reach a wider audience, possibly including for recruitment purposes.

It is unclear whether the programme airs live or on which frequency. What is clear is that it is distributed as audio files.

[CEP @FightExtremism]

🗨️With introductory remarks from Marius Müller-Hennig (Advisor on Freedom, Law, and Internal Security, Analysis, Planning, and Consulting Department @FESonline)
🖥️Presentations by @sofia_koller (Senior Research Analyst @CEP_Germany), and Torben Adams (Head of Unit, Ministry of Justice and Constitutional Affairs in Bremen, Germany)
And moderated by @CEPschindler (Senior Director @FightExtremism)

[CEP @FightExtremism]

📣Announcing the latest CEP Webinar: From Caliphate to Prison – How Germany is Rehabilitating ISIS Returnees

🗓️Tuesday, December 16, 2025
🕘 9:00-10:30am ET | 15:00-16:30 CET

Join us for a discussion on the German experience and ongoing challenges. https://t.co/naSRGyUrQu