Kyiv says carried out missile attack on target in Crimean port of Sevastopol during 'a meeting of the Russian navy's leadership'

Announcement is Russia's first admission of losses following ship's destruction, apparently at the hands of Ukraine's military

Pictures, video show ship listing to port with smoke pouring from damaged superstructure, life rafts missing and no sign of crew on board

Ukraine says 19 troops, initially thought dead, exchanged for 11 Russian sailors who were rescued from sinking ship near Odesa

Ukrainian military says the Vasily Bykov sunk in a missile attack near the port city of Odesa

Maneuvers in the Indian Ocean seen as response to recent US exercise with Saudi Arabia in which Chinese navy also participated

Vessel said to be top-secret nuclear-powered submersible used for sensitive missions at great ocean depths

American guided-missile cruiser and Russian destroyer come within 50 meters of each other in the East China Sea; no injuries reported