In the fall of 2023, on the border of the Sumy and Kursk regions, Russian peculiar forces increased the strength of operations, importantly expanding the number of border infiltrations. Russian reconnaissance and sabotage groups tried to cross the border, which frequently ended in failure, but sometimes in successful actions, becoming a serious problem for local safety structures (mainly the Border Guard, National defender and Territorial defence Forces). Serious adequate that the change of tactics and the threat from Spetsnaz began to be talked about in public.