In December, the Obama administration seized the properties and expelled 35 Russian diplomats, alleging that they were involved in election interference, an accusation which Moscow denies.
The White House offer to return the property in return for some kind of concession is "unacceptable," Kremlin spokesman Dmitry Peskov told reporters on Monday.
"We have already noted that we deem it absolutely unacceptable to set any conditions for the return of the diplomatic property. We believe that it must be returned without any conditions, without any negotiations," Peskov said.
"I think, most likely, the problem won't be solved: there are too many contradictions, the sides are too far apart. As was clear from the very beginning of this story, this is politics, it is Obama's 'parting gift.'"
"Going forward, the issue is what they are ready to 'exchange.' Russia and the US are in a period of rather complicated negotiations regarding Syria and regarding economic issues. In many respects, this issue is an additional 'bargaining chip' that Obama left for Trump."
"But now, both diplomatic corps are in a paradigm of 'real politics': both Russian and American diplomats aren't paying attention to rhetorical devices and symbolic moves and gestures, they are [only] interested in getting real political resolutions from their opponents, " Dobromelov said.
