ANKARA — NATO will add up to five MQ-4C Triton unmanned aerial vehicles to its network of aerial sensors, Secretary-General Mark Rutte said during the alliance’s Defence Industry Forum here today. Built by Northrop Grumman, the MQ-4C Triton is a high-altitude, long-endurance UAV specifically designed for maritime surveillance over vast stretches of sea. According to Rutte, the aircraft will help N...