The meeting is likely to be the first forum for the West to consider any possible joint response to Kremlin critic Alexey Navalny's jailing last week.
The Kremlin says the move amounts to a full-scale trade war and an end to hopes for better ties with the Trump administration.
The decision came after the US House of Representatives and the Senate approved new sanctions on Russia. Russian President Vladimir Putin say the US has to remove the staff by September 1.
If the bill passes the Senate as expected, it would be sent to the White House for US President Donald Trump to sign into law or veto. It is, however, expected to garner enough support to override a Trump veto.
The measure passed the house 419 to 3 but will have to be passed through Senate before it reaches US President Donald Trump's desk to be signed into law.
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