The daily said Saturday that “the terror blitz will happen all at once according to a former propaganda mastermind of the Islamic State group.”It claimed that “the jihadist group, also termed Daesh, plan to turn the streets of European cities into bloody carnage.”It said “British authorities are concerned that the recent wave of migrants across Europe could set the stage for pan-European terror.”According to the daily, “the horrifying plan has been revealed after a former Daesh identified only as Harry S escaped the terror group and is now being questioned by authorities in Germany.”“He told German intelligence officers that senior ISIS commanders asked him, along with other fighters, if he would “bring jihad back to their homeland”.He then detailed a plan to carry out a Europe-wide terror attack.“The disturbing revelation comes as ISIS released a gruesome new execution video that shows a man in a blue jumpsuit - alleged to be a Saudi collaborator' - being shot in the face.Daesh yesterday declared war on Saudi Arabia, after the Middle East's wealthiest nation claimed to have formed a 34-bloc military task force aimed at destroying the group.”1424**1312