.Putin phones cross-border strike in Kursk region a 'provocation' The Washington PostRussia states Ukrainian soldiers intercrossed into its area and released 'huge assault' CNNHow deep right into Russian territory has Ukraine's shock August incursion reached? MeduzaUkraine Launches Rare Cross-Border Ground Assault Into Russia The The Big Apple TimesRussia: State of emergency situation in Kursk amid attack DW (English).