.Putin phones cross-border attack in Kursk location a 'provocation' The Washington PostRussia states Ukrainian soldiers crossed in to its region and also launched 'large strike' CNNHow deep right into Russian region has Ukraine's shock August attack arrived at? MeduzaUkraine Launches Rare Cross-Border Ground Assault Into Russia The New York TimesRussia: State of urgent in Kursk among incursion DW (English).