Among the eye-opening details of President Trump’s plans for an eponymous class of giant warships is one that appears to contravene an earlier policy position: these “battleships” are to be armed with a new nuclear-armed cruise missile.Back in February, however, the president told reporters: “There’s no reason for us to be building brand-new nuclear weapons. We already have so many.” I agreed with President Trump then on this point, and I still do. We hav