Russia struggles to repel deep Kursk incursion by Ukraine
Russia struggles to repel deep Kursk incursion by Ukraine
www.bbc.com
Ukraine war: Cross-border attack into Russia's Kursk enters fifth day

Ukrainian troops remained in Russia’s western Kursk region on Friday night, as its surprise cross-border offensive into Russia came to the end of a fourth day.
…
Reports suggest that Ukrainian troops are operating more than 10km (six miles) inside Russia - the deepest cross-border advance by Kyiv since Moscow launched its full-scale invasion of Ukraine in February 2022.