What makes this particular nuke new is the fact that it carries a far smaller destructive payload than the thermonuclear monsters the Trident has been hosting for decades – not the equivalent of about 100 kilotons of TNT as previously, but of five kilotons. According to Stephen Young of the Union of Concerned Scientists, the W76-2 will yield “only” about one-third of the devastating power of the weapon that the Enola Gay, an American B-29 bomber, dropped on Hiroshima on August 6, 1945. Yet that very shrinkage of the power to devastate is precisely what makes this nuclear weapon potentially the most dangerous ever manufactured. Fulfilling the Trump administration’s quest for nuclear-war-fighting “flexibility,” it isn’t designed as a deterrent against another country launching its nukes; it’s designed to be used. This is the weapon that could make the previously “unthinkable” thinkable.