For the first time, the United States is preparing to deter two nuclear adversaries, Russia and China. In today's post-New START environment, US adversaries remain committed to weakening American resolve and undermining Washington’s commitment to its allies. China is engaging in a historic expansion of its nuclear forces and has diversified its delivery systems across land, sea, and air. According to US Department of War estimates, China could possess up to 1,500 nuclear warheads by 2035.