"I am leaving it without comment," Peskov said, when asked about Russia's position on the threat warnings from Washington.
On September 17, US President Joe Biden said that Washington's response to the allegedly possible use of nuclear weapons by Moscow would be "consequential."
Last Sunday, US Secretary of State Antony Blinken also told the CBS News broadcaster that Washington had developed a plan of actions in the event that Russia uses nuclear weapons. The US official threatened Moscow with "catastrophic" effects, but did not go into details.