Despite repeated warnings about the arms shipments taking place across the Turkish border, ISIS was able to acquire its own weapons production programme in Iraq and Syria from 2015-2019 through its links with individuals and companies based in southern Turkey, as well as other European countries such as Britain.
The report says that the ISIS weapons programme dealt with more than 50 companies, in more than 20 countries, that produced or distributed goods that ISIS subsequently used to make roadside bombs, drones and improvised weapon systems.
Materials were obtained from countries including the UK, Denmark and Spain, as well as Syria and Turkey.