Submarines' life of hide and seek just got more complicated.
Key point: Every great power is rushing to get in on the drone ship and sub game.
Russia is working on a new trick to track American submarines: sonar-equipped robots.
But turnabout is fair play: the United States has already developed a robotic yacht-sized surface craft designed to stalk diesel subs.
Russia has begun testing unmanned underwater vehicles (UUVs) equipped with towed sonar arrays, according...
Read this story at The National Interest