china's unannounced test of a hypersonic glide vehicle in August signals that the Chinese regime is about to violate the Outer Space Treaty. The United States should now withdraw from that global agreement so that it can develop a similar weapon. Unfortunately, Washington is not even trying to catch up to its geopolitical arch-foe. This month, the Financial Times revealed that China launched such a vehicle into "low-orbit space." The glide vehicle "circled the globe" and then cruised down toward a target, missing it by "about two-dozen miles." Chinese foreign ministry spokesperson Zhao Lijian on October 18 contradicted the FT...