.Putin gets in touch with cross-border assault in Kursk region a 'provocation' The Washington PostRussia claims Ukrainian soldiers intercrossed into its own territory and launched 'gigantic attack' CNNHow deep in to Russian region possesses Ukraine's surprise August attack reached? MeduzaUkraine Launches Rare Cross-Border Ground Attack Into Russia The New York TimesRussia: Condition of emergency situation in Kursk surrounded by incursion DW (English).