China and Russia’s intention to pursue hypersonic weapons lit a fire under the U.S. military, forcing it to re-invigorate its own programs.
But just how far the two rivals have come in their own programs and whether or not they can penetrate the United States’ missile defenses is a matter of debate. Are they behind?
Have they caught up? Or are they ahead of the United States when it comes to this disruptive technology?
The answers are opaque, experts said……
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