Hypersonic missiles travel five times faster than the speed of sound and cannot be stopped by operational defense systems.
According to a senior US general, Russia has repeatedly fired missiles at Ukrainian military targets.
This comes as the Kremlin gives its strongest indication that it will scale back its invasion of Ukraine, after its invasion made limited progress.
Russia’s defense ministry said that the “first phase” of the operation had been completed, adding that troops would now “focus our core efforts” on the Donbas region.
Western officials speculate that this could mean a “pause” in operations around Kyiv and elsewhere as resources are diverted towards the east of the county.
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