The Department of Defense has abandoned plans to revise its Doctrine for Joint Nuclear Operations.
The draft revision became controversial when it was disclosed last year because of its unusually frank discussion of preemptive use of nuclear weapons.
The decision to cancel the revision was discovered by Hans Kristensen of the Federation of American Scientists. He described the move last week and provided relevant links in the new blog of the FAS Strategic Security Project.
UPDATE: Some of the backstory on the proposed draft nuclear doctrine, with related links, was presented by ArmsControlWonk last year.