Which country successfully tested the Wu-14, a hypersonic nuclear delivery vehicle?

WU-14 is the Pentagon’s code name for a Chinese hypersonic nuclear delivery vehicle. China confirmed the test of the hypersonic glide vehicle, on June 7 and is the missile‚Äôs fourth test in 18 months. The strategic strike weapon is extremely advanced and can travel at 10 times the speed of sound, or 12,231.01kph.