World's 'oldest shipwreck' found at bottom of Black Sea

Over the past 600 years, Europe's Black Sea has been one of the maritime areas hit hardest by war and nationalism. Bordering Turkey, Russia and Ukraine, among other nations, the inland body of water's trade routes were dominated by the Ottoman Turks after they occupied Constantinople in 1453. It was a key battlefield during World War II and has once again become contested, with Ukraine and Russia clashing there in recent years.