“Rockets manufactured in Bulgaria bear a ‘10’ or ‘11’ in a double circle. The green paints used by China and Russia are slightly different shades. ‘In Iraq, we have fought the whole world,’ one soldier bragged to me a couple of days before, referring to the many foreign fighters recruited by ISIS. But he could easily have meant the arms from the disparate countries in that single room.”
Source: Exclusive: Tracing ISIS’ Weapons Supply Chain—Back to the US | WIRED