Russia hadn’t lost a warship to an attack since World War II. Until last week. On Thursday, the Ukrainian navy announced it destroyed a Russian amphibious warship, the Saratov, that was conducting resupply missions in the Ukrainian port of Berdyansk. While the details are fuzzy, it's yet more proof that Russia’s war in Ukraine isn't going well. Following the invasion, Turkey invoked the 1936 Montreux Convention and denied entry to all foreign warships not previously based in the Black Sea. What’s there now, and perhaps what Russia can bring by canal from the Caspian Sea, is all the navy Russia...