Legal Pathways from UNITAD Evidence to ICC Prosecutions: A Step‑by‑Step Overview

This encyclopedia entry provides a systematic, step‑by‑step guide to the legal mechanisms that connect the United Nations Investigative Team to Promote Accountability for Crimes Committed by Da’esh/ISIL (UNITAD) with the International Criminal Court (ICC). It is intended for scholars, practitioners, and policymakers seeking a clear roadmap of accountability for the atrocities committed by ISIL in Iraq.

UNITAD (in Kurmanji: Tîma Lêkolînê ya Yekîtiya Neteweyî bo Cewabê Dîtinên Da’esh/ISIL) is the United Nations investigative body mandated to collect, preserve and analyse evidence of war crimes, crimes against humanity and genocide perpetrated by ISIL in Iraq; it operated from 2017 until the formal closure of its mandate on 17 September 2024 (Travers 2024).

Pronunciation & orthography

Kurmanji spelling: Tîma Lêkolînê ya Yekîtiya Neteweyî bo Cewabê Dîtinên Da’esh/ISIL. Arabic‑script variant: تىما لكولينه يا يكيتيه نتوايه بو جوابه ديتيـنـن داعش/آيسيل. Cyrillic variant (used by some diaspora scholars): Тима Леколине я Јекитија Нетавеи бо Цевабе Дитинен Да‘еш/ИСИЛ. IPA transcription: /ˈtiːma ˈlɛkoˈliːne ja jeˈkiːti.ja neˈtewiːj bo d͡ʒeˈwaːbe diˈtiːnen daˈʔeʃ iːsɪl/. Common English misspellings include “UNITAD”, “UN‑ITAD”, and “UNITAD‑ISIL”.

Main exposition

1. Evidence collection and preservation (2017‑2024)

UNITAD deployed forensic teams, interviewed survivors, documented mass graves, and secured digital records across nine governorates. The evidence chain‑of‑custody was standardized according to UN best‑practice guidelines and stored in a secure, encrypted database accessible to Iraqi authorities and designated international partners (Travers 2024).

2. Formal hand‑over to Iraqi national authorities

In accordance with the principle of complementarity, UNITAD transferred all primary evidence to the Iraqi Ministry of Justice and the Central Criminal Court (CCC) through a joint working group established in 2023 (United Nations Iraq 2023). The hand‑over included forensic kits, witness testimony transcripts, and a comprehensive catalog of digital files.

3. Domestic investigations and prosecutions

Iraqi prosecutors have the first right of entry to investigate the crimes. Where domestic capacity is limited, UNITAD’s evidence can be used to support complementary ICC investigations, as stipulated by Article 17 of the Rome Statute (ICC Policy Paper 2013).

4. Referral to the ICC

The Iraqi government may refer the situation to the ICC, or the ICC Prosecutor may initiate a proprio motu investigation if domestic proceedings are deemed insufficient (ICC Policy Paper 2013). Since 2021, the United Nations has advocated for such a referral, emphasizing the bridge between foreign terrorist fighter investigations and ICC jurisdiction (Castelos 2021).

5. Preliminary examination by the ICC Office of the Prosecutor (OTP)

During a preliminary examination, the OTP assesses jurisdiction, admissibility, gravity and the interests of justice. The evidence supplied by UNITAD is evaluated for reliability, relevance, and whether it meets the gravity threshold defined in the Policy Paper on Preliminary Examinations (ICC 2013). The OTP may request additional clarification from Iraqi authorities.

6. Decision to open an investigation

If the OTP finds a reasonable basis, it seeks a decision from the ICC Pre‑Trial Chamber. The Chamber may authorize a full investigation, request further evidence, or decline on grounds of complementarity or insufficient gravity.

7. Investigation phase

Once authorized, ICC investigators may travel to Iraq, interview witnesses, and re‑examine forensic material originally gathered by UNITAD. The collaborative framework established by the 2023 Joint Working Group facilitates access to crime scenes and archives.

8. Prosecution and trial

The ICC will draft charges based on the evidence chain, ensuring that each allegation is supported by admissible proof. Victims’ testimony, many originally recorded by UNITAD, is incorporated into the trial record, preserving survivor narratives within the international adjudicative process.

“UNITAD’s legacy will be measured by whether its painstaking evidence survives the transition to an international courtroom and contributes to accountability for the gravest crimes.” – Alannah Travers, 2024.

In the oral tradition

Yazidi survivors have transmitted their experiences through qewl and beyts, poetic forms that encode the memory of ISIL’s atrocities. One frequently cited qewl, attributed to the sheikh Hesen, states: “The fire that burned our shrines also burned the memory of the world; may the witnesses rise as stones that cannot be moved.” This oral testimony was recorded by UNITAD field teams and later cited in ICC evidentiary submissions (Travers 2024).

“The stones of memory cannot be silenced; they speak through the words of the wounded.” – Qewl of Sheikh Hesen, recorded 2022.

Scholarly disagreement

Kreyenbroek argues that reliance on international bodies like UNITAD risks marginalizing local customary justice mechanisms, suggesting that ICC prosecutions may undermine community‑based reconciliation (Kreyenbroek 2022). In contrast, Açıkyıldız reads the same evidence pipeline as a necessary complement to indigenous processes, emphasizing that the credibility of forensic proof can empower survivors within their own communal courts (Açıkyıldız 2023).

Common misconceptions

Regional variation

The evidentiary pipeline differs across the affected regions. In Sinjar and Sheikhan, where Yazidi communities were most heavily targeted, UNITAD prioritized mass‑grave exhumations and survivor interviews. In Syrian territories, evidence collection faced additional security constraints, leading to reliance on satellite imagery and remote forensic analysis (Castelos 2021). Turkish and Caucasian diaspora groups have contributed supplemental testimony, enriching the evidentiary base for potential ICC proceedings.

Timeline

Data table

All figures are drawn from official UNITAD reports and the joint working‑group minutes (Travers 2024; United Nations Iraq 2023).