The Miami meeting on Saturday followed US talks on Friday with Ukrainian and European officials, the latest discussions of a peace plan that has sparked some hope of a resolution to the conflict that began when Russia launched its full-scale invasion in February 2022.
Russian President Vladimir Putin's special envoy Kirill Dmitriev told reporters after meeting US special envoy Steve Witkoff and Trump's son-in-law Jared Kushner that the talks were constructive and would continue on Sunday.
"The discussions are proceeding constructively. They began earlier and will continue today, and will also continue tomorrow," Dmitriev said.
Marco Rubio, Trump's top diplomat and national security advisor, had said he might also join the talks.
US, Ukrainian and European officials earlier this week reported progress on security guarantees for Kyiv as part of the talks to end the war, but it remains unclear if those terms will be acceptable to Moscow.
A Russian source told Reuters that any meeting between Dmitriev and the Ukrainian negotiators had been ruled out.
In Kyiv, Ukrainian President Volodymyr Zelenskiy said Ukraine would back a US proposal for three-sided talks with the United States and Russia if it facilitated more exchanges of prisoners and paved the way for meetings of national leaders.
"America is now proposing a trilateral meeting with national security advisers - America Ukraine, Russia," Zelenskiy told local journalists in Kyiv.
Ukraine wanted a "just, durable peace" with "strong security", he posted on X.
US intelligence reports continue to warn that Putin intends to capture all of Ukraine, sources familiar with the intelligence said, contradicting some US officials' assertions that Moscow is ready for peace.
Putin offered no compromise during his annual press conference in Moscow, insisting that Russia's terms for ending the war had not changed since June 2024, when he demanded Ukraine abandon its ambition to join NATO and withdraw entirely from four Ukrainian regions Russia claims as its own territory.
Kyiv says it won't cede land that Moscow's forces have failed to capture in nearly four years of war.
Ukraine's top negotiator Rustem Umerov said US and European teams on Friday held talks and agreed to pursue their joint efforts.
"We agreed with our American partners on further steps and on continuing our joint work in the near future," Umerov wrote on Telegram of the discussions in the United States, adding that he had informed Zelenskiy of the outcome of the talks.
Rubio told reporters on Friday that progress has been made in discussions to end the war but there was still a way to go.
"The role we're trying to play is a role of figuring out whether there's any overlap here that they can agree to, and that's what we've invested a lot of time and energy and continue to do so. That may not be possible. I hope it is. I hope it can get done this month before the end of the year."
with AP and DPA
