Russia is expected to begin naval, air exercises in Caribbean, U.S. official says CBS NewsRussian warships to arrive in Havana next week, say Cuban officials, as military exercises expected CBS NewsRussian naval ships, including nuclear-powered submarine, to visit Cuba CNNRussia deploying air and sea assets for military exercises in Caribbean, U.S. official says Yahoo! VoicesRussian warships, including nuclear sub, missile frigate, will arrive in Cuba next week AOL