.Putin gets in touch with cross-border assault in Kursk region a 'justification' The Washington PostRussia claims Ukrainian troops crossed in to its own region as well as released 'massive attack' CNNHow deep right into Russian area possesses Ukraine's unpleasant surprise August incursion gotten to? MeduzaUkraine Launches Rare Cross-Border Ground Assault Into Russia The New York City TimesRussia: Condition of unexpected emergency in Kursk in the middle of attack DW (English).