They do appreciate art after all. Known for destroying ancient relics as idolatrous, the extremists wreaking havoc in Iraq and Syria aren’t smashing them all: Many are being sold to line the jihadists’ pockets. According to Iraqi officials, the group is expanding its trade in archaeological artifacts, making stolen antiquities their second biggest source of income after oil sales. “What they can’t sell, they destroy,” said an Iraqi minister of heritage. Experts worry that as airstrikes damage ISIS-controlled oil refineries, the jihadists will loot even more ancient treasures.