.Putin phones cross-border strike in Kursk region a 'justification' The Washington PostRussia mentions Ukrainian soldiers crossed into its region and also introduced 'extensive assault' CNNHow deep in to Russian territory has Ukraine's unpleasant surprise August incursion gotten to? MeduzaUkraine Launches Rare Cross-Border Ground Assault Into Russia The New York City TimesRussia: State of emergency in Kursk amid attack DW (English).