SYRIAN Kurdish militia suffered a major setback yesterday when Isis recaptured the Ja’bar castle west of its stronghold Raqqa.

The 11th-century castle on the north bank of Lake Assad on the Euphrates river was freed from Isis’s grip on Friday by the US-backed Syrian Democratic Forces (SDF), dominated by the Kurdish People’s Protection Units (YPG).

They found the Wahhabi death cult had been using the medieval fort as a dungeon for captives.