FORMER ISIS EMIR IN CHARGE OF WEAPON DEPOTS: CORRUPTION, MILITARY DEFEATS, AND AL-BAGHDADI'S DISAPPEARANCE HAVE DEMORALIZED MEMBERS; ISIS OBTAINED SARIN AND MUSTARD GAS, WORKED ON CHEMICAL WEAPONIZATION AT MOSUL UNIVERSITY

https://www.memri.org/tv/former-isis-emir-charge-weapon-depots-corruption-military-defeats-and-al-baghdadis-disappearance