This has also provided them with the arms they are now using in their brutal attacks against Christians and other minorities.
Investigations reveal that at least some of the weapons being used by the terrorist organization are of U.S. manufacture.
According to reports, the investigation was conducted by Conflict Armament Research, a small-arms research organization in London.
The study included photographs that indicate that weapons were “seized by Kurdish forces from militants in Iraq and Syria over a 10-day period in July.”