Washington (AFP) – Russia’s claim it used a hypersonic missile in Ukraine was a way to reclaim war momentum, but the next-generation weaponry has not proved to be a “game changer,” the Pentagon’s chief said Sunday. Moscow has said it has fired two hypersonic missiles in Ukraine, and while US Defense Secretary Lloyd Austin would not “confirm or dispute” whether Russia used such weapons, he warned that President Vladimir Putin’s invasion was undergoing a change in tactics including the targeting of civilians. Russia’s use of the hard-to-intercept hypersonics would mark a dramatic escalation of i…