aircraft carrier groups and other targets. The Russian president said at the time that the first submarine that would carry Poseidon underwater drones would be floated out in the spring of 2019.

There are reasons for Russia not to even bother with aircraft carriers. Money can be plowed into hypersonic missiles. The ...

Poseidon is a multipurpose system, so presumably, it could play several roles that would also include bypassing U.S. ballistic missile defenses aimed against aircraft carrier groups and coastal ...