Leaked Report: Russia Has an Underwater Nuclear Drone Capable of Carrying a 100-Megaton Warhead

In this July 2017 file photo, the Russian nuclear submarine Dmitrij Donskoj sails under the Great Belt Bridge between Jyutland and Fun through Danish waters, near Korsor on it's way to Saint Petersburg to participate in the 100th anniversary of the Russian Navy on July 21, 2017. Michael Bager/AFP/Getty Images

Russia has an underwater nuclear drone that can carry a 100-megaton nuclear warhead, according to a newly leaked report.

A draft of the Pentagon’s Nuclear Posture Review noted that the weapon is part of Russia’s expanded nuclear arsenal.