.Putin contacts cross-border attack in Kursk location a 'provocation' The Washington PostRussia states Ukrainian soldiers intercrossed right into its area and also introduced 'extensive assault' CNNHow deep into Russian area has Ukraine's surprise August incursion arrived at? MeduzaUkraine Launches Rare Cross-Border Ground Attack Into Russia The Nyc TimesRussia: State of emergency situation in Kursk among incursion DW (English).