https://www.afp.com/en/news/3954/pentagon-successfully-tests-hypersonic-missile-doc-1q200q7

The United States announced Friday it has successfully tested an unarmed prototype of a hypersonic missile, a nuclear-capable weapon that could accelerate the arms race between superpowers.

The Pentagon said a test glide vehicle flew at hypersonic speeds – more than five times the speed of sound, or Mach 5 – to a designated impact point.

The test followed the first joint US Army and Navy flight experiment in October 2017, when the prototype missile demonstrated it could glide in the direction of a target at hypersonic speed.

"Today we validated our design and are now ready to move to the next phase towards fielding a hypersonic strike capability," Vice Admiral Johnny Wolfe said in a statement.

Hypersonic weapons can take missile warfare, particularly nuclear warfare, to a new – and, for many, frightening – level.

They can travel much faster than current nuclear-capable ballistic and cruise missiles at low altitudes, can switch direction in flight and do not follow a predictable arc like conventional missiles, making them much harder to track and intercept.