The Defense Department today released a new National Defense Strategy, accompanied by the Nuclear Posture Review and Missile Defense Review , that maintains the U.S. military's focus on China as a "pacing challenge," labels Russia as an "acute threat," and has upgraded the importance of defending Guam. The documents follow the release of the White House National Security Strategy earlier this month. Two senior defense officials who briefed reporters on the strategies today, the classified versions of which were submitted...