US attack sub, Canada navy patrol ship arrive in Cuba on heels of Russian warships Reuters CanadaUS nuclear-powered submarine arrives in Guantanamo Bay a day after Russian Navy docks in Havana CNNRussian Flotilla Off Florida Coast Sparks Deployment of US Navy Destroyers, Planes Military.comRussian warship visit brings cold war frisson to Havana The GuardianUS Nuclear Attack Submarine Surfaces in Cuba Behind Russian Fleet Newsweek