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US and Japan could develop hypersonic missile interceptors together
(www.telegraph.co.uk)
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Riiiight, you're going to build a thing that presumably goes mach 10 which can shoot other things moving at mach 10
Biden is slowly just morphing into Reagan
Call it Star Wars Joe!
If it's laser-based (and it may have to be if it's going to intercept anything going that fast) it is the Star Wars thing all over again!