Russia's foreign ministry said in a statement on Saturday that it warned Western countries against using the Wagner mercenary group's mutiny "to achieve their Russophobic goals".
Wagner militia chief takes feud with top brass to new level, Prigozhin earlier accused army of deceiving Putin over Ukraine
Yusov said the Belgorod operation would create a "security zone" to protect Ukrainians from cross-border attacks by Russia.
Ukrainian forces used humor to mock Russia's performance on one of the largest national holidays.
The Kremlin said two drones had been used in the alleged attack on Putin's residence in the Kremlin citadel, and Ukraine declined responsibility.
Putin received reports from Airborne Forces commander and Dnieper area commander to discuss the ongoing operations in the Kherson and Zaporizhzhia theaters.
According to military bloggers, the systems are able to carry multiple independently targetable nuclear warheads and can be mounted on a truck carrier or deployed in silos.
The months-long struggle for Bakhmut has seen some of the bloodiest attritional fighting of Russia's year-old invasion.