President Vladimir Putin said on Friday that certain "ill-wishers" were stepping up efforts to destabilise Russia and urged members of his cabinet not to allow this "under any circumstances".
He said Russia's Security Council would discuss ensuring security in the context of what he said were "extremely important" issues concerning relations between the vast country's 190 ethnic groups.
"Today, we will also be addressing these issues in terms of ensuring Russia's security, in this case domestic political security," he said.
Since sending tens of thousands of troops into Ukraine in February 2022, Russia has intensified its crackdown on dissenting voices and pushed the remainder of its beleaguered liberal opposition abroad.
Putin has repeatedly called on Russia to unite in the face of "existential threats" from the West, but has occasionally faced animosity from ethnic groups who feel particularly targeted by Moscow's mobilisation drive.
In March, Moscow outlawed the Free Nations of Post-Russia Forum, an organisation founded by opposition activists that advocates independence for Russia's multiple ethnic groups.
Hopes grew on Friday for peace between Iran and the US after President Donald Trump said a deal could be signed as soon as this weekend, even as Tehran said it had not made a final decision on a pact.
Ukraine and Russia exchanged overnight drone strikes into early Friday, with Ukraine targeting a major oil processing and petrochemical region while Russia attacked railway stations and electrical substations.
Authorities in Afghanistan's western city of Herat arrested at least 30 women, accusing them of violating dress rules imposed by the Taliban government, the UN agency for women's rights said, but added that some were later released.
US President Donald Trump called off plans for renewed military strikes on Iran at the last minute on Thursday, saying negotiations with Tehran had advanced to the highest levels of Iran's leadership and had been approved by a broad coalition of regional powers.