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takyon writes:

China and Russia are 'aggressively pursuing' hypersonic weapons, and the US can't defend against them, top nuclear commander says

America's top nuclear commander described a grim scenario for U.S. forces facing off against a new breed of high-speed weapons that Russia and China are developing.

"We don't have any defense that could deny the employment of such a weapon against us," Air Force Gen. John Hyten, commander of U.S. Strategic Command, told the Senate Armed Services Committee on Tuesday. This means that, as of now, the U.S. has to rely on deterrence against these so-called hypersonic weapons, he said.

Sen. Jim Inhofe, R-Okla., then asked the general to explain what a hypersonic weapon is and what it does. "A hypersonic threat is a system that starts out ballistic, so you'll see it like a ballistic missile, but then it depresses the trajectory and flies more like a cruise missile or airplane," Hyten said. "It goes up into the lower reaches of space and turns immediately back down and then levels out." At that point, Hyten said, the weapon will fly at very high speed, which is where the term hypersonic comes from.

"Both Russia and China are aggressively pursuing hypersonic capabilities," Hyten told Inhofe. "We've watched them test those capabilities."

See also: Russia will put advanced mach 20 hypersonic boost and glide missile into service in 2019

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