Britain, France and Germany have been working to refine US proposals for an end to the fighting with Russia, which in a draft disclosed last month called for Kyiv to cede more territory, abandon its NATO ambitions and accept limits on its armed forces.

Ukrainian President Volodymyr Zelenskyy and U.S. envoys are in Berlin for another round of talks intended to secure a deal to end the war.

The talks come as the US pushes Ukraine to accept its plan for implementing a ceasefire.

US and Ukrainian negotiators will again meet for high-stakes peace talks -- this time in Berlin -- as disagreements persist over territorial control and security guarantees and as Russia intensifies attacks on Ukrainian infrastructure sites.

President Volodymyr Zelenskyy offered to drop Ukraine's aspirations to join the NATO military alliance as he held hours of talks with U.S. envoys in Berlin on Sunday to end the war with Russia, with negotiations ‌set to continue on Monday. No more details were immediately available of the meetings between…

Russia has rejected a proposal to hold a referendum to let Ukrainians decide on giving up territory in the eastern Donbas region, much of which Moscow claims to control, highlighting a key sticking point as negotiators head to Berlin for high stakes talks aimed at ending Russia's war on Ukraine.