Who armed ISIS? A three year study provides some answers

Supplies of materiel, including advanced light weapons systems the U.S. military, from foreign parties — notably the United States and Saudi Arabia, ended up in the hands of ISIS fighters.

This report is the result of more than three years of field investigation into Islamic State supply chains. It presents an analysis of more than 40,000 items recovered from the group between 2014 and 2017. These items encompass weapons, ammunition, and the traceable components and chemical precursors used by the group to manufacture improvised explosive devices.

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