MOSCOW, January 15. /TASS/. Even as Ukraine’s command has been seeking to stop Russian troops from advancing, those plans have been thwarted, said Army General Valery Gerasimov, the chief of Russia’s General Staff, as he inspected the Battlegroup Center.

Russian forces are expanding the buffer zone in the bordering Sumy and Kharkov regions, the senior general said.

TASS has gathered key takeaways from statements by the Russian General Staff chief.

As Ukrainian commanders are seeking to make every effort to stop Russian troops from advancing, "without taking losses into account," those plans have been thwarted.

Ukrainian troops have made attempts to demonstrate their alleged presence in Kupyansk, including by hoisting Ukrainian flags, but "that activity has been repelled."