(Reuters) – Ukraine suffered a massed Russian missile attack in the early hours of Saturday, its air force said, adding that Moscow had fired some of its most fearsome hypersonic missiles. Air defences shot down Russian missiles in at least five regions across Ukraine, according to local officials from those provinces. However, no details were given on whether any targets were hit, and far less information about the attack than usual was provided by officials. Ukraine’s air force warned during the attack that Russia had fired Kinzhal missiles — perhaps the hardest conventional Russian missile…