ISIS leader was US intelligence supergrass who ratted out 88 fellow jihadists when he was arrested in 2008, declassified files reveal

The leader of ISIS ratted out 88 fellow jihadists when he was arrested by US forces 12 years ago, it has emerged. 

Amir Muhammad Sa'id Abdal-Rahman al-Mawla provided the names of dozens of terrorist figures involved in kidnappings and assassinations, according to interrogation reports released by the US-based Combating...