In early June, the United States government denied reports it had reached an agreement with Russian Federation to return to it the two diplomatic compounds in question - one in Maryland and one in NY - to Russian Federation.
A White House official on Thursday said the administration had to "move on" from Russia's 2016 election interference, allowing for the possibility that the United States could return two compounds on USA soil to the Russian government.
Donald Trump Jr. on Tuesday released email records related to his meeting with Veselnitskaya in June 2016 during his father's presidential campaign, confirming previous US media reports of the meeting.
Russia said Friday it is "ready to take reciprocal measures" if the United States does not return property in America seized in December as part of the Obama administration's response to Russian meddling in the US election and harassment of American diplomats in Moscow.
Russian President Vladimir Putin heads the State Council in Moscow's Kremlin, Russia, Thursday, May 4, 2017.
CBS News said Foreign Ministry spokeswoman Maria Zakharova told reporters Moscow "will have to take reciprocal measures" if the issue regarding the compounds was not resolved.
The two compounds were closed down over Russia's alleged interference in the USA presidential election, which Moscow has repeatedly denied.
Reports this week that US President Donald Trump's son, Donald Trump Jr.
"There are too many CIA and Pentagon intelligence employees under the roof of the American diplomatic mission whose activities do not correspond to their status", Zakharova said.
Flynn may have violated the Logan Act, which prohibits Americans from negotiating with foreign governments about disputes with the United States.
Moscow has had no contacts with Russian lawyer Natalia Veselnitskaya who met U.S. President Donald Trump's son previous year, Kremlin spokesman Dmitry Peskov said Wednesday.
Former Director of National Intelligence James Clapper also denounced the notion of returning the compounds last week.
She further complained that United States officials were not issuing visas to Russian diplomats to allow Moscow to replace the expelled employees.
"If there is no progress, we will have to take retaliatory measures", she added. "One of our options, apart from a tit-for-tat expulsion of Americans, would be to even out the numbers".
Peskov was responding to comments made to CNN by Sebastian Gorka, a Trump adviser, that appeared to link the compounds' return to Russia's behavior in Syria.