Vyacheslav Gladkov, the governor or Russia's Belgorod region bordering Ukraine, says the situation is "difficult but under control" in the area amid an attempted incursion by Ukrainian troops. "According to the Russian Ministry of Defense, the situation on the border remains difficult, but under control. Our military is carrying out planned work. I ask you to remain calm and trust only official sources of information," Gladkov wrote on Telegram. There was no immediate comment from Ukraine on Gladkov's claim. An incursion by Ukrainian forces in Russia's Kursk region has been under way since August 6.