Senior Pentagon officials have arrived in Ukraine to "discuss efforts to end the war" with Russia, the US military has said, BBC reported.

The team, led by US Army Secretary Dan Driscoll, is expected to meet Ukrainian President Volodymyr Zelensky in Kyiv on Thursday when he returns from a trip to Turkey.

Reports began surfacing on Wednesday that the US and Russia had prepared a new peace plan, containing major concessions from Ukraine. Neither Washington nor Moscow has officially confirmed the plan, according to BBC.