Russia claims to have created a devastating hypersonic missile that travels five times faster than the speed of sound and could rip through navy warship defences because it's too fast to stop.So, it can be stopped - but only if you have the Russian "system" - I'm sure U.S. engineers and scientists can dope that out.
The Kremlin's Zircon missile has been called "unstoppable", "unbeatable" and "undefendable" with a 4,600mph speed that only one defence system in the world can destroy – that system is owned by Russia.
By the way, you know what's faster than "hypersonic?"
Frickin' laser beams.
Of course, there might be glitches:
UPDATE: US Navy Develops Laser Weapon Prototypes for Destroyers, Cruisers (and Maybe Carriers). Zap.