DUBAI (Reuters) -Hopes are fading that Iranian President Ebrahim Raisi and his foreign minister have survived a helicopter crash in mountainous terrain and icy weather, an Iranian official said on Monday after search teams located the wreckage. "President Raisi's helicopter was completely burned in the crash ... unfortunately, all passengers are feared dead," the official told Reuters. Rescue teams fought blizzards and difficult terrain through the night to reach the wreckage in East Azerbaijan province in the early hours of Monday.