Russian envoy Kirill Dmitriev said on Saturday he was heading to Miami, where another round of talks to settle the Ukraine war is set to take place.
Ukrainian and European teams were also in the sunny American city for the negotiations mediated by Donald Trump's envoy Steve Witkoff and the US president's son-in-law Jared Kushner.
Trump's envoys have pushed a plan in which the United States would offer security guarantees to Ukraine, but Kyiv will likely be expected to surrender some territory, a prospect resented by many Ukrainians.
However, US Secretary of State Marco Rubio on Friday promised not to force Ukraine into any agreement, saying "there's no peace deal unless Ukraine agrees to it". He added that he may join the talks on Saturday in Miami, his hometown.
Dmitriev wrote in an X post that he was "on the way to Miami," adding a peace dove emoji and attaching a short video of a morning sun shining through clouds on a beach with palms.
"As warmongers keep working overtime to undermine the US peace plan for Ukraine, I remembered this video from my previous visit -- light breaking through the storm clouds," he added.
Russian and European involvement in the talks marks a step forward from an earlier stage, when the Americans held separate negotiations with each side in different locations, AFP reported.
However, it is unlikely Dmitriev would hold direct talks with Ukrainian and European negotiators as relations between the two sides remain extremely strained.
Moscow, which sent troops into Ukraine in February 2022, argues that Europe's involvement in the talks would only hinder the process and tends to paint the continent's leaders as pro-war.
The weekend talks come after President Vladimir Putin vowed to press ahead with his military offensive in Ukraine, hailing Moscow's battlefield gains nearly four years into his war in an annual news conference on Friday.
Russia announced on Saturday it had captured two villages in Ukraine's Sumy and Donetsk regions, further grinding through the country's east in costly battles.
Meanwhile, the death toll in Ukraine's Black Sea Odesa region from an overnight Russian ballistic missile strike on port infrastructure rose to eight, with almost three dozen people wounded in the attack.
At the same time, Ukraine claimed to have destroyed two Russian fighter jets at an airfield in occupied Crimea, according to the security service SBU.
Putin ordered a full-scale invasion of Ukraine in February 2022, describing it as a "special military operation" to demilitarize the country and prevent the expansion of NATO.
Kyiv and its European allies say the war, the largest and deadliest on European soil since World War II, is an unprovoked and illegal land grab that has resulted in a tidal wave of violence and destruction.
