A national defense analyst says NATO and the West need to pay attention to Russia’s repeated warnings about using nuclear weapons, this time from a notable academic who concludes Russia must consider nukes to stop NATO expansion and to “save humanity” from the West. “Russia and its leadership seem to be facing a difficult choice,” begins the academic paper by Sergei Karaganov. “It becomes increasingly clear that a clash with the West cannot end even if we win a partial or even a crushing victory in Ukraine.” That frightening document, which published in late June, goes on for another 2,900...