This US Defense Advanced Research Projects Agency (DARPA) artists rendering shows the Falcon Hypersonic Technology Vehicle 2 (HTV-2). US weapons researchers are looking to develop missiles moving more than five times the speed of sound, with arms giant Raytheon getting the initial $20 million development contract. The first flight tests are expected within two to four years. Existing ballistic missiles... 

The Chinese Defense Ministry confirmed the fourth test of a hypersonic nuclear delivery vehicle, which the US called an “extreme maneuver,” amid rising tensions between the two powers in the South China Sea. The test of the hypersonic glide vehicle, which the US has dubbed the “WU-14”, was carried out on June 7 and is the missile’s fourth test in 18 months. “The scheduled scientific...