Whoever is elected on November 8th, we are evidently all headed into a world in which Trumpian-style itchy trigger fingers could be the norm. It already looks like both Moscow and Washington will contribute significantly to this development — and they may not be alone. In response to Russian and American moves in the nuclear arena, China is reported to be developing a “hypersonic glide vehicle,” a new type of nuclear warhead better able to evade anti-missile defenses — something that, at a moment of heightened crisis, might make a nuclear first strike seem more attractive to Washington. And don’t forget Pakistan, which is developing its own short-range “tactical” nuclear missiles, increasing the risk of the quick escalation of any future Indo-Pakistani confrontation to a nuclear exchange. (To put such “regional” dangers in perspective, a local nuclear war in South Asia could cause a global nuclear winter and, according to one study, possibly kill a billion people worldwide, thanks to crop failures and the like.)