.Putin gets in touch with cross-border strike in Kursk region a 'justification' The Washington PostRussia claims Ukrainian troops crossed into its own area as well as released 'huge assault' CNNHow deep into Russian territory has Ukraine's surprise August attack gotten to? MeduzaUkraine Launches Rare Cross-Border Ground Attack Into Russia The The Big Apple TimesRussia: Condition of unexpected emergency in Kursk among incursion DW (English).