.Putin calls cross-border assault in Kursk area a 'justification' The Washington PostRussia states Ukrainian soldiers intercrossed into its territory and also released 'substantial strike' CNNHow deep right into Russian region possesses Ukraine's shock August attack reached? MeduzaUkraine Launches Rare Cross-Border Ground Assault Into Russia The New York TimesRussia: State of unexpected emergency in Kursk in the middle of incursion DW (English).