Valuyki is a town in Belgorod Oblast, Russia, located at the confluence of the Valuy and Oskol Rivers, 150 kilometers east of Belgorod and 15 km north of the Russia–Ukraine border. Population: 33,032; 35,322; 35,790; 34,863. From Wikipedia
Kyiv says the deep attacks seek to sap Russia’s fuel supply to weaken frontline operations.