.Putin gets in touch with cross-border strike in Kursk region a 'provocation' The Washington PostRussia points out Ukrainian troops crossed right into its region and also introduced 'extensive strike' CNNHow deep in to Russian area possesses Ukraine's shock August incursion hit? MeduzaUkraine Launches Rare Cross-Border Ground Attack Into Russia The New York City TimesRussia: Condition of emergency in Kursk in the middle of attack DW (English).