.Putin contacts cross-border attack in Kursk area a 'justification' The Washington PostRussia says Ukrainian troops intercrossed right into its region and introduced 'large attack' CNNHow deep in to Russian region possesses Ukraine's surprise August incursion arrived at? MeduzaUkraine Launches Rare Cross-Border Ground Assault Into Russia The The Big Apple TimesRussia: State of emergency in Kursk among incursion DW (English).