.Putin contacts cross-border attack in Kursk location a 'provocation' The Washington PostRussia points out Ukrainian troops crossed into its own region and released 'gigantic strike' CNNHow deep into Russian region has Ukraine's unpleasant surprise August incursion gotten to? MeduzaUkraine Launches Rare Cross-Border Ground Assault Into Russia The The Big Apple TimesRussia: Condition of unexpected emergency in Kursk in the middle of attack DW (English).