content: No, it's definitely a US nuclear sub on a training mission for the US Navy. Because of the way sonar works, one of the best places in the world to hide a sub is in between ice chunks in the Arctic ocean. They become virtually undetectable from the air and sonar has a really tough time hearing them with all the ice around moving, cracking, etc. Also, close to Russia. During the Cold War the Arctic Ice caps were the place to run and hide if you ever thought someone was following you.