The Soviet K-129 submarine was out of it's patrol area, that being why it was located.It was about 600 miles from Midway where it was found, and I think that is international waters.But at least two nuclear weapons were recovered from the Soviet K-129 submarine, making it a significant environmental threat, even at 600 miles away. Some of the crew were recovered, but they were very radioactive. They were buried at sea in a steel chamber in September 1974, with full military honors.