IT'S AN EVER MORE UNIPOLAR WORLD:

Ukraine's air force claimed Saturday to have downed a Russian hypersonic missile over Kyiv using newly acquired American Patriot defense systems, the first known time the country has been able to intercept one of Moscow's most modern missiles.

Air Force commander Mykola Oleshchuk said in a Telegram post that the Kinzhal-type ballistic missile had been intercepted in an overnight attack on the Ukrainian capital earlier in the week. It was also the first time Ukraine is known to have used the Patriot defense systems.

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