(Reuters) -Russia launched 28 attack drones and three cruise missile at Ukraine overnight, Ukraine’s air force said on Sunday, adding that its air defence systems destroyed 21 of the drones. The air force said on its Telegram messaging channel that Russia targeted mainly the south and east of Ukraine, and did not say what happened to the three cruise missiles. “The enemy is shifting the focus of attack to the frontline territories – Kherson and Dnipropetrovsk regions were attacked by drones,” Air Force spokesperson Yuriy Ihnat told national television. Reuters could not independently verify th…