A German rapper-turned ISIS extremist who starred in the group's grisly beheading videos was being spied on for the FBI by a woman he thought was his wife. Denis Cuspert, 39, who now calls himself Abu Talha al-Amani, embraced radical Islam and travelled to Syria to fight with militants before becoming the group's main propagandist. The spy transmitted critical information about the rapper and his ISIS colleagues before escaping to Turkey - where she was arrested and then turned over to the US, according to the German newspaper Bild. The paper said German and American intelligence sources confirmed the existence...
