.Putin calls cross-border assault in Kursk area a 'justification' The Washington PostRussia points out Ukrainian troops intercrossed in to its own territory and released 'huge strike' CNNHow deep right into Russian region possesses Ukraine's unpleasant surprise August incursion reached? MeduzaUkraine Launches Rare Cross-Border Ground Assault Into Russia The New York TimesRussia: State of unexpected emergency in Kursk amidst attack DW (English).