Pete I will concede that there are scenarios where disarmament could make things worse by encouraging bad actors to use nukes on the premise that they could get away with it.
Yet I stand by my statement which is that the end goal, the only rational end goal, must be the ultimate elimination of these evil weapons. However we get to that goal, that's the only prize that matters.
Those who suggest that we must be satisfied with the nuclear sword of Damocles hanging over our heads in perpetuity, are buying into a type of rational lunacy. If one of those nukes Trump wants to build to make America more secure, accidentally goes off or gets launched and triggers a global apocalypse ending human civilizations as we know it, what's our posthumous apology going to be to those who inherit our ruined world? What rational argument are we going to make to justify ourselves? WHOOOOPS.
And incidentally, I don't see nukes as any better than biological weapons. I see them as far far worse. If somebody invents Captain Tripps and 90% of the human population perishes, at least the survivors would not be inheriting an irradiated ruined world.