[Daily Mail, where America gets its news] - ISIS struck al-Sina prison in Hasakah, Syria, on January 20 with gunmen and suicide bombs
- Kurdish-led SDF forces spent six day battling to bring it back under their control
- SDF now say 374 militants died, along with 77 jail staff and 40 of their fighters
- But another 400 ISIS fighters are missing, in one of the largest jail-breaks since their so-called Caliphate was toppled in 2019