Poseidon: Russian Underwater Drone That Can Sink Britain

The most dangerous drone planned for the Russian military in the coming years is the Poseidon, which is slated to come into service in 2027. While several years away in development, the weapon is chilling. It is an undersea drone launched from a submarine that is equipped with a nuclear warhead of up to two megatons. The drone will be powered by nuclear-propulsion so the Russian navy will not have to worry about it running out of fuel. If the nuclear plant becomes operational it could have unlimited range.