.Putin calls cross-border assault in Kursk region a 'provocation' The Washington PostRussia states Ukrainian troops intercrossed in to its own territory and also launched 'large assault' CNNHow deep right into Russian territory possesses Ukraine's surprise August incursion gotten to? MeduzaUkraine Launches Rare Cross-Border Ground Attack Into Russia The New York City TimesRussia: State of emergency situation in Kursk amidst incursion DW (English).