Ukrainian negotiators met with US envoys and European and NATO representatives in Abu Dhabi on Tuesday ahead of talks with Russia on ending more than four years of conflict.

"The first meeting will be held with representatives of the United Kingdom, France, Germany, Italy, NATO and the European Commission, joined by US Special Envoys Steve Witkoff and Jared Kushner," Kyiv's chief negotiator Rustem Umerov said on social media.

"We will align our positions and coordinate our steps ahead of the next stage of negotiations."