In addition to “diversifying” its nuclear arsenal, the Pentagon notes that it will seek to “expand the range of credible U.S. options for responding to nuclear or non-nuclear strategic attack,” raising concerns that President Donald Trump will argue for the use of nuclear force as a deterrent—a significant departure from previous administrations which saw nuclear weapons as an option only for retaliation.
http://theantimedia.org/dr-strangelove-nuclear-posture-review/