Under the proposed Russian deal, Kyiv would fully withdraw from the eastern Donetsk and Luhansk regions in return for a Russian pledge to freeze the front lines in the southern regions of Kherson and Zaporizhzhia, the sources said.

President Trump and Russian President Vladimir Putin are scheduled to meet Friday at Joint Base Elmendorf-Richardson in Anchorage, Alaska, to discuss the conflict between Russia and Ukraine.

Last month was the deadliest since Putin launched his full-scale war on Ukraine three and a half years ago. In July alone, 286 civilians were killed and another 1,388, according to official data.

Reports of the Russian president's demands have emerged following the summit in Alaska - as Ukrainian President Volodymyr Zelenskyy prepares to fly to Washington DC to see Donald Trump for the next stage of talks.