.Putin contacts cross-border attack in Kursk region a 'justification' The Washington PostRussia claims Ukrainian soldiers intercrossed right into its territory and also launched 'large assault' CNNHow deep in to Russian region has Ukraine's surprise August incursion arrived at? MeduzaUkraine Launches Rare Cross-Border Ground Assault Into Russia The New York TimesRussia: State of unexpected emergency in Kursk among attack DW (English).