KYIV, Feb 5 (Reuters): Ukraine and Russia concluded a second round of U.S.-brokered talks in Abu Dhabi on Thursday aimed at ending Europe's biggest conflict since World War Two, with the two sides conducting a major prisoner swap and agreeing to resume negotiations soon.

U.S. President Donald Trump's special envoy Steve Witkoff said the delegations from the U.S., Ukraine, and Russia had agreed to an exchange of 314 prisoners of war, which took place on Thursday. It was the first such swap in five months.

Ukrainian President Volodymyr Zelenskiy said some of the released POWs had been held for nearly four years. He said the next round of talks would be held soon, likely in the United States.

Witkoff, writing on the X social media platform, said: "The discussions were constructive and focused on how to create the conditions for a durable peace."

He said the talks "demonstrate that sustained diplomatic engagement is delivering tangible results and advancing efforts to end the war in Ukraine."

Zelenskiy, speaking in his nightly video address, said Ukraine favored any diplomatic format "that can realistically bring peace closer and make it reliable, lasting, and such that deprives Russia of the appetite to continue fighting."

Speaking earlier alongside Polish Prime Minister Donald Tusk, Zelenskiy said the talks covered the main differences between the two sides.

Photo from Reuters