Though the strategic calculus remains a matter of debate, namely due to Russia's ongoing push in Ukraine's east, the tactical success is undeniable.As the incursion hit its 10-day mark on Aug. 15, we bring you a summary of what is known about the operation, from the moment the first Ukrainian troops crossed the border to Kyiv declaring a full capture of the town of Sudzha and creation of a military administration in Russia.Day 1 - Ukrainian troops enter RussiaRussian pro-war Telegram channels are the first to report on Ukrainian "sabotage and reconnaissance groups" crossing the border around 8 a.m. on Aug. 6. The information is later confirmed by Alexei Smirnov, the acting governor of Kursk Oblast, who said Kyiv attempted a breakthrough in two border districts, Sudzha and Korenevo.0:00/1×The footage of Ukrainian operations during the first day of the Kursk Oblast incursion on Aug.