MOSCOW, October 5. /TASS/. US senators who demand President Joe Biden expel 300 Russian diplomats if Moscow refuses to expand the US embassy staff obviously want all US diplomatic missions in Russia to be closed, a Russian foreign ministry official told TASS on Tuesday.

"Those who call for such a step obviously want American diplomatic missions in Russia to be closed. They should understand that the responsibility for it will rest on them," the official stressed.

Apart from that, the ministry official noted, that Russia doesn’t have that many diplomats in Washington. "Or, maybe, lacking any knowledge in international relations, the senators counted Russian diplomatic personnel working at the permanent mission to the United Nations," he added.

Earlier, several US senators representing both parties called on Biden to expel 300 Russian diplomats if Russia refuses to increase the personnel of the US embassy in Moscow.