.Putin gets in touch with cross-border assault in Kursk area a 'provocation' The Washington PostRussia says Ukrainian troops crossed into its territory as well as released 'gigantic assault' CNNHow deep in to Russian territory has Ukraine's shock August attack hit? MeduzaUkraine Launches Rare Cross-Border Ground Attack Into Russia The New York TimesRussia: Condition of emergency situation in Kursk in the middle of attack DW (English).