Understanding UNITAD: On the Interpretation and Implications of a Mandate.

This article examines the United Nations Investigative Team to Promote Accountability for Crimes Committed by Da'esh/ISIL (UNITAD), established by the UN Security Council in 2017 to collect and preserve evidence of international crimes committed by ISIL in Iraq. It analyzes how UNITAD interprets its written mandate—originally focused on supporting domestic prosecutions and promoting global accountability—and how political, practical, and personal factors have shaped its investigative priorities, methods, and challenges, including restrictions related to Iraq's use of the death penalty. While UNITAD has contributed to prosecutions in third countries and facilitated broader transitional justice activities such as mass grave exhumations and victim support, its inability to fully engage with Iraqi authorities has limited its impact on domestic accountability and reconciliation. The article highlights the complexities of mandate interpretation for UN investigative mechanisms and underscores the implications for transitional justice, emphasizing the need for clearer mandates and realistic expectations to enhance their effectiveness and legacy.