Tensions mount as the United States and North Korea continue to each issue provocative statements ahead of Kim Jong Un’s end-of-year deadline for denuclearization negotiations. Despite the U.S. good-faith suspension of joint military exercises with South Korea, satellite imagery indicates that nuclear and missile development in North Korea is ongoing.

U.S. lawmakers from both parties are seeking an assessment of alternatives to basing U.S. nuclear weapons in Turkey.

With no more limits on intermediate-range missiles, the Pentagon is embarking on a test of once-banned systems. 

A mysterious August explosion at a Russian missile test site likely involved a prototype nuclear-powered weapon.