In a quiet, bureaucratic meeting on Sept. 15, the United Nations Security Council gave notice that an internationally supported effort to document the crimes committed in Iraq by members of the Islamic State group (IS) will end next year.

At the request of the Iraqi government, the mandate of the UN Investigative Team to Promote Accountability for Crimes Committed by Da'esh/ISIL (UNITAD) only received a twelve-month extension. Still grappling with the aftermath of the slaughter perpetrated by IS when it captured northern Iraq in 2014, members of the Yazidi community are shocked. They view UNITAD as a...