.Putin contacts cross-border strike in Kursk location a 'provocation' The Washington PostRussia states Ukrainian troops crossed into its territory and also introduced 'massive assault' CNNHow deep right into Russian territory has Ukraine's surprise August incursion arrived at? MeduzaUkraine Launches Rare Cross-Border Ground Attack Into Russia The The Big Apple TimesRussia: Condition of urgent in Kursk among attack DW (English).