Russia is ready to expel about 30 US diplomats and seize US state property in retaliation for Washington's sanctions, Russian officials say.
The threat came from Russian foreign ministry sources, quoted by the daily Izvestia. Other Russian officials have made similar statements recently.
In December the Obama administration expelled 35 Russian diplomats and shut down two intelligence compounds.
The measures were a response to alleged Russian meddling in the US election.
Russia was already under US sanctions.