It emerged that the material had been sold - legally - to the governments of the United States and Saudi Arabia. It was then shipped through Turkey.
The destination was northern Syria and the opposition groups (which the US and Saudi Arabia supported) fighting President Bashar al-Assad.
The intention was never for the ammunition to find its way to IS but somewhere along the way it was diverted.
This ammunition was found in Tikrit, Ramadi, Falluja and now Mosul - all places where it has been used to fight the US-backed Iraqi forces.
