.Putin calls cross-border assault in Kursk region a 'justification' The Washington PostRussia mentions Ukrainian troops crossed into its own area and launched 'extensive strike' CNNHow deep in to Russian area has Ukraine's shock August incursion reached? MeduzaUkraine Launches Rare Cross-Border Ground Assault Into Russia The New York City TimesRussia: State of emergency situation in Kursk amidst attack DW (English).