Russia claims the Poseidon 'doomsday machine' can destroy cities with radioactive tidal waves - here are the facts ...
U.S. and Russian officials have both described Poseidon as a new category of retaliatory weapon, capable of triggering radioactive ocean swells to render coastal cities uninhabitable.
The Poseidon nuclear-powered super torpedo is capable of devastating coastal regions by triggering vast radioactive ocean swells, military analysts say.