.Putin contacts cross-border attack in Kursk area a 'provocation' The Washington PostRussia states Ukrainian troops crossed in to its territory and launched 'gigantic attack' CNNHow deep into Russian area has Ukraine's shock August attack arrived at? MeduzaUkraine Launches Rare Cross-Border Ground Attack Into Russia The New York TimesRussia: State of unexpected emergency in Kursk surrounded by attack DW (English).