The first round of trilateral talks was held last month.

Negotiators from Russia, Ukraine and the United States have concluded their two-day meeting in Abu Dhabi on Saturday without announcing any results in their efforts to end the almost-four-year-long war.

This story has been updated with a response from the White House. A senior U.S. envoy involved in efforts to end Russia's full-scale war against Ukraine has displayed a lack of basic understanding of Ukraine's political system and the war itself while speaking in a closed conversation with a small group of reporters,

Ukraine-Russia war latest: Zelensky agrees to Trump-backed plan for response to Russian ceasefire violations - Limited ceasefire requested by Trump ends as Moscow resumes attacking Kyiv and other majo