Western Iraq saw more brutal bloodshed this weekend after the Islamic State massacred 322 people of the Albu Nimr tribe, a Sunni group, including women and children. The Iraqi government confirmed the attack in the Anbar region, which began on Saturday and continued into Sunday, and was described as "systematic killings."

The tribe had been working to fend off ISIS militants, but began to run low on ammunition, food, and fuel last week. Sheik Naeem al-Ga'oud, a tribe leader, had according to Reuters "repeatedly asked the central government and army to provide his men with arms but no action was taken." Al-Ga'oud noted the killings were execution-style and included high schoolers and college students who tried to escape ISIS militants.

In response to the mass killing, Iraqi Prime Minister Haider al-Abadi ordered more airstrikes against ISIS-held territories, though details surrounding the timing of new airstrikes remain unclear.

Beyond the lives lost, the success of these "systematic killings" will have a long-term impact on the struggle between ISIS and the Iraqi government. "The fall of the village dampened the Shi'ite-led national government's hopes the Sunni tribesmen of Anbar—who once helped U.S. Marines defeat al Qaeda—would become a formidable force again and help the army take on Iraq's new, far more effective enemy," noted Reuters's Michael Georgy.