Rescue workers in Iran continued their search on foot Sunday for the helicopter carrying nine people including Iranian President Ebrahim Raisi and Foreign Minister Hossein Amirabdollahian after it went missing in mountainous terrain, state media reported. Forty rescue teams were searching for the exact location of the accident with sniffer dogs and drones. The search was hampered by darkness and rain, according to a state television reporter on Sunday evening. The remote, muddy route is inaccessible by road, forcing rescue teams to proceed on foot, he said. Interior Minister Ahmad Wahidi also …