Europe Can Prosecute ISIS — And It Should: The Case for Universal Jurisdiction
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Europe Can Prosecute ISIS — And It Should: The Case for Universal Jurisdiction
While Iraq's judiciary struggles with the scale and complexity of ISIS crimes, European courts have a legal tool that could change the equation: universal jurisdiction. Under this principle, courts in Germany, France, Sweden, and other EU states can try individuals for crimes against humanity and genocide — regardless of where the crimes occurred. The question is no longer whether they can. It is whether they will.
What Is Universal Jurisdiction?
Universal jurisdiction is a principle of international law that allows national courts to prosecute individuals for the most serious crimes — genocide, crimes against humanity, war crimes, and torture — regardless of where the crime occurred, the nationality of the perpetrator, or the nationality of the victim.
The principle rests on a simple but powerful idea: some crimes are so grave that they offend all of humanity. When the state where the crime occurred cannot or will not deliver justice, other states have both the right and — arguably — the obligation to act.
The European Legal Framework
Germany has led the world in applying universal jurisdiction to ISIS crimes. In 2021, a German court convicted a former ISIS member of genocide against the Yazidi people — the first conviction anywhere in the world that explicitly recognized ISIS crimes against Yazidis as genocide. The case was built partly on evidence collected by UNITAD.
In 2022, a German court sentenced a former ISIS member to life imprisonment for the murder of a five-year-old Yazidi girl — a case that generated international attention and demonstrated that European courts could deliver accountability even for crimes committed thousands of miles away.
Sweden, France, the Netherlands, Belgium, and Austria have all pursued or are actively pursuing ISIS-related cases under universal jurisdiction or their domestic equivalents. The legal machinery exists. The precedents are being set.
"The conviction in Germany was not just a verdict for one case. It was a signal to every survivor in Iraq that their testimony matters — that it can reach a court, that it can produce justice, even when the Iraqi system cannot."
— Human rights legal practitioner, European Parliament briefing (2022)
The UNITAD Connection
UNITAD was specifically designed to collect evidence that could be used in multiple legal systems — including European courts. Its evidence standards were built to meet the requirements of international criminal law, not just Iraqi domestic law.
This is critical. The evidence UNITAD gathered on the systematic nature of ISIS crimes — the command structures, the documented orders, the patterns of conduct that establish criminal intent — is precisely the kind of evidence that European courts need to prosecute senior ISIS figures for genocide and crimes against humanity.
With UNITAD now closed, one of the urgent questions is how this evidence will be made available to European prosecutors pursuing universal jurisdiction cases. Formal cooperation agreements between UNITAD's successor body and European judicial authorities are essential.
The Gap: Turkmen and Other Minorities
European universal jurisdiction cases have overwhelmingly focused on crimes against Yazidis. This reflects the pattern of international advocacy — the Yazidi cause attracted more European political and media attention, which in turn produced more European-based witnesses, more diaspora testimony, and more political will to prosecute.
Crimes against Turkmen, Christians, Shabaks, and Kakai communities have received far less attention in European courts. This is not because the crimes were less serious — the legal elements of genocide and crimes against humanity are equally present. It is because the victims have less international platform.
European prosecutors and NGOs specializing in international criminal law have a responsibility to actively seek out testimony from Turkmen and other minority survivors — not only to pursue justice for those communities, but to build a complete legal record of ISIS atrocities.
The Practical Challenges
Universal jurisdiction cases are extraordinarily difficult and resource-intensive. They require:
- Physical jurisdiction over the suspect — the individual must be on the prosecuting state's territory or be extradited there
- Witness cooperation — survivors must be willing and able to testify, often requiring relocation, protection, and extended support
- Evidence transfer — cooperation between UNITAD's successor body and European prosecutors must be formalized
- Political will — prosecuting ISIS members who are nationals of allied states (including some with European citizenship) creates diplomatic sensitivities
These challenges are real. They are not insurmountable. Germany has demonstrated that they can be overcome. The question is whether other European states are prepared to invest the resources and political capital required.
The September 2025 French Precedent — And Its Problems
In September 2025, France chose a different path: rather than prosecuting its ISIS nationals at home, it transferred 47 French citizens detained in Syria to Iraq for trial. Human rights organizations raised immediate concerns about fair trial standards, the use of the death penalty, and the adequacy of Iraqi judicial procedures.
This approach — outsourcing accountability to a jurisdiction that cannot meet international standards — represents a failure of European responsibility. France had the legal tools to try these individuals at home. It chose not to use them. The survivors of French ISIS members' crimes deserved better.
What Europe Must Do
- Expand universal jurisdiction investigations to explicitly include crimes against Turkmen, Christian, Shabak, and Kakai communities — not only Yazidis
- Formalize evidence-sharing agreements with UNITAD's successor body to ensure European prosecutors have access to the investigative record
- Fund witness protection programs that enable survivors based in Iraq, Turkey, and elsewhere to testify safely in European proceedings
- Refuse extradition to jurisdictions that cannot guarantee fair trial standards and do not exclude the death penalty
- Create dedicated ISIS accountability units in national prosecutors' offices — as Germany has done — with adequate staffing and long-term funding
Conclusion
Europe built the legal framework for universal jurisdiction precisely for situations like this: when crimes of extraordinary gravity go unpunished because the states where they occurred lack the capacity or the will to prosecute. ISIS crimes against Iraqi minorities are exactly such a situation.
The German convictions proved it is possible. The survivors of Tal Afar, Sinjar, and the Nineveh Plain are waiting to see whether possible becomes practice. Their wait has already lasted a decade.
Independent Research & Analysis
Hussein Monitor
Tracking accountability for ISIS crimes against Iraq's minorities — from the courtrooms of Europe to the mass graves of Nineveh. By Hussein Zainulabdeen, former UNAMI Liaison Officer.
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