US President Donald Trump said he was giving Ukraine until Thursday to accept the US peace plan, which supports Russia's key demands on NATO, territory and recognition of Russian-controlled regions.

"I believe it can be used as a basis for a final peaceful settlement," Putin told senior officials at a meeting of Russia's Security Council, which is the equivalent of a modern political bureau of Russia's most powerful officials.

Putin added that the 28-point plan had not yet been discussed in detail with the United States, but that Moscow had received a copy of it.

Putin said that Ukraine opposes the plan, but that neither Kiev nor European powers understand the reality that Russian forces are advancing into Ukraine and will continue to advance unless peace is established.

Russia controls just over 19% of Ukraine, or 115,500 square kilometers, just one percentage point more than two years ago. Moscow wants to gain control of all of Donbas, which includes Donetsk and Luhansk, as well as all of Kherson and Zaporizhia.

President Volodymyr Zelensky said on Friday that Ukraine risks losing its dignity and freedom or Washington's support over the US peace plan.

Putin said Russia discussed Trump's peace plan before the August summit in Alaska and that Moscow had made compromises, as Washington requested.

"The US administration has so far failed to obtain the consent of the Ukrainian side. Ukraine is opposed," Putin said.

Putin said Russian forces had taken almost complete control of the northeastern Ukrainian city of Kupiansk on November 4 - despite Kiev's denials - and that such advances would continue if Ukraine rejected the US plan.

“If Kiev does not want to discuss President Trump’s proposal and refuses to do so, then both they and the European warmongers should understand that the events that took place in Kupiansk will inevitably be repeated in other key sectors of the front,” Putin said. “And, in general, that suits us,” Putin said, adding that he was open to talks about peace.