The Russian Navy will not modernize the massive Pyotr Veliky battle-cruiser, the world’s only nuclear-powered surface vessel, and the largest non-aircraft carrier naval warship. The one-of-kind warship that packs phenomenal firepower was supposed to be refitted and modernized after another ship in its class, Admiral Nakhimov, concluded her modernization. Pyotr Veliky will head for decommissioning…