"We are now waiting for the reaction of our American colleagues to the discussion that we had on Tuesday this week," Ushakov told reporters.
A telephone conversation between Putin and US President Donald Trump is not planned yet, but it can easily be organized, Ushakov said.
"No, it is not planned yet. You know, it is all already easy to organize," Ushakov told reporters.
As soon as prerequisites for telephone or face-to-face contacts between Putin and Trump are created, everything will be done quickly enough, the official added.
There is no understanding on the date of the new meeting of the Russian side with US special envoy Steve Witkoff yet, the Kremlin aide noted.
"No, not with Witkoff," Ushakov told reporters.