.Putin contacts cross-border strike in Kursk region a 'provocation' The Washington PostRussia mentions Ukrainian soldiers crossed into its area and introduced 'large assault' CNNHow deep right into Russian area has 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 surrounded by incursion DW (English).