Iraq's Yazidis marked three years Thursday since Islamic State launched what the United Nations said was a genocidal campaign against them, but their ordeal is far from over despite the ouster of the jihadi fighters.

Militants were driven out of the last part of the Yazidi homeland in northern Iraq in May. However, most Yazidis have yet to return to villages they fled when Islamic State overran Sinjar in the summer of 2014, killing and capturing thousands because of their faith.

Nearly 3,000 Yazidi women and children remain in Islamic State captivity, and control over Sinjar is disputed by rival armed factions and their regional patrons. Justice for the crimes Yazidis suffered, including sexual enslavement, has also so far proved elusive.