How ISIS Produced Its Cruel Arsenal on an Industrial Scale

An undated handout photo of a series of shoulder-fired, recoilless launchers made by the Islamic State group, shown with a variety of repurposed projectiles. ISIS weapons engineers took Soviet-era munitions and made Western-style disposable launchers for them, even affixing written instructions for their use. (Damien Spleeters/Conflict Armament Research via The New York Times) -- NO SALES; FOR EDITORIAL USE ONLY WITH STORY SLUGGED ISIS BOMB MAKING BY ISMAY, GIBBONS-NEFF AND CHIVERS FOR DEC. 10, 2017. ALL OTHER USE PROHIBITED.