.Putin phones cross-border strike in Kursk region a 'provocation' The Washington PostRussia mentions Ukrainian soldiers crossed in to its own area and released 'large attack' CNNHow deep in to Russian area has Ukraine's shock August incursion reached? MeduzaUkraine Launches Rare Cross-Border Ground Attack Into Russia The Nyc TimesRussia: Condition of urgent in Kursk among incursion DW (English).