Russia hit sea and land-based targets with ballistic and cruise missiles as part of strategic nuclear exercises on Saturday.
The lunch was overseen by President Vladimir Putin and his Belarusian counterpart Alexander Lukashenko, the Kremlin said.
The annual exercises featured launches of Kinzhal and Tsirkon hypersonic missiles and a number of other weapons, the Kremlin said in a statement.
Ukraine’s military on Saturday said mercenaries had arrived in separatist-held eastern Ukraine to stage provocations in collaboration with Russia’s special services.
“The purpose of these provocations will, of course, be to accuse Ukraine of further escalation,” the military said in a statement.
Ukraine has accused Russia of planning to stage provocations that could lead to civilian casualties in eastern Ukraine in order to give Moscow a pretext to attack its neighbour.