.Putin gets in touch with cross-border strike in Kursk region a 'justification' The Washington PostRussia points out Ukrainian troops crossed in to its own region and released 'massive attack' CNNHow deep into Russian region possesses Ukraine's surprise August attack hit? MeduzaUkraine Launches Rare Cross-Border Ground Assault Into Russia The New York TimesRussia: State of unexpected emergency in Kursk among incursion DW (English).