What to expect as Russia, Ukraine and the US hold trilateral talks in Abu Dhabi

Negotiators from Ukraine, Russia and the United States are set to meet in the capital of the United Arab Emirates (UAE) on Tuesday for a new round of talks aimed at ending nearly five years of full-scale war triggered by Moscow's invasion of its neighbour.

Security guarantees for the warring sides are set to top the agenda, with US officials insisting that a broader security architecture for Europe must be part of any peace deal.