.Putin gets in touch with cross-border assault in Kursk area a 'provocation' The Washington PostRussia mentions Ukrainian troops intercrossed into its own territory and also launched 'massive assault' CNNHow deep in to Russian area possesses Ukraine's shock August attack reached? MeduzaUkraine Launches Rare Cross-Border Ground Attack Into Russia The New York City TimesRussia: State of urgent in Kursk among incursion DW (English).