 Military Matters. U.S. Northern Command and the Canadian Armed Forces have deployed warships and aircraft to monitor four Russian Navy vessels as they conduct drills in Cuba's waters. Russian warships entered the port of Havana early Wednesday. Pentagon Deputy Press Secretary Sabrina Singh said the Pentagon was not surprised. We've seen them do these type of port calls before. We, of course, take it seriously, but these exercises don't pose a threat to the United States at all.