The Trump administration plans to loosen constraints on the use of nuclear weapons and develop a new low-yield nuclear warhead for US Trident missiles, according to a former official who has seen the most recent draft of a policy review.

Jon Wolfsthal, who was special assistant to Barack Obama on arms control and nonproliferation, said the new nuclear posture review prepared by the Pentagon, envisages a modified version of the Trident D5 submarine-launched missiles with only part of its normal warhead, with the intention of deterring Russia from using tactical warheads in a conflict in Eastern Europe. Continue reading.