[MaxfordAndSons]

You're missing the forest for the trees. The accuracy to kilotonnage ratio of the warheads, as well as the absolute warhead count, is irrelevant. The US nuclear arsenal as a whole is 2-3x more effective, and thus 2-3x deadlier, because of the super-fuze.

Also, even if the increased accuracy results in less civilian casualties during the first strike (debatable, as strategic population centers will still be targeted...with greater accuracy), the super-fuze is still likely increasing the overall probability of nuclear war. Thus I would hardly say it makes humanity as a whole better off.

[danielvf]

In the eighties, the US had missles with a CEP of 300 feet. The increased accuracy from the fuzes is irrelevant in terms of attacking cities. It only matters for attacking nuclear hardened silos.

The US arsenal has been getting less deadly against civilians and the earth, while becoming more effective against other nuclear forces. Seems like a good trade.