French, Italian, German, Polish, British, Finnish and European Commission leaders on Saturday welcomed US President Donald Trump's efforts to try to end the war, but emphasised the need to pressure Russia and provide security guarantees for Kyiv.
"The end of the war must be fair, and I am grateful to everyone who stands with Ukraine and our people today for the sake of peace in Ukraine, which is defending the vital security interests of our European nations," Zelenskiy wrote on X.
"Ukraine values and fully supports the statement by President Macron, Prime Minister Meloni, Chancellor Merz, Prime Minister Tusk, Prime Minister Starmer, President Ursula von der Leyen, and President Stubb on peace for Ukraine."
Trump plans to meet Russian President Vladimir Putin in Alaska on Friday and has talked up the prospect of a deal that could resolve the three-and-a-half-year-old conflict.
Details of the potential deal have yet to be announced, but Trump said it would involve "some swapping of territories to the betterment of both".
Zelenskiy and his European allies have warned that any deal requiring Ukraine to surrender significant parts of its territory would only encourage Russian aggression.
US Vice President JD Vance met Ukrainian and European allies in Britain on Saturday at Chevening House, a country mansion southeast of London, to discuss Trump's push for peace.
The Wall Street Journal said European officials had presented a counter-proposal, including demands that a ceasefire must take place before any other steps and that any territory exchange must be reciprocal, with firm security guarantees.
"You can't start a press by ceding territory in the middle of fighting," it quoted one European negotiator as saying.
A US official said "hours-long" meetings at Chevening produced significant progress toward Trump's goal of bringing an end to the war in Ukraine.
The White House did not immediately respond when asked if the Europeans had presented their counter-proposals to the US
Starmer and Macron spoke and pledged to find a "just and lasting peace" in Ukraine, a Downing Street spokesperson said.
"They discussed the latest developments in Ukraine, reiterating their unwavering support to President Zelenskiy and to securing a just and lasting peace for the Ukrainian people," they said.
"They welcomed President Trump's efforts to stop the killing in Ukraine and end Russia's war of aggression, and discussed how to further work closely with President Trump and President Zelenskiy over the coming days."
Zelenskiy said the meeting was constructive.
"The path to peace for Ukraine should be determined together and only together with Ukraine, this is key principle," he said.
He had earlier rejected any territorial concessions, saying: "Ukrainians will not give their land to the occupier."
Macron also said Ukraine must play a role in any negotiations.
"Ukraine's future cannot be decided without the Ukrainians, who have been fighting for their freedom and security for over three years now," he wrote on X after what he said were calls with Zelenskiy, German Chancellor Friedrich Merz and British Prime Minister Keir Starmer.
Ukraine and the European Union have pushed back on proposals that they view as ceding too much to Putin, whose troops invaded Ukraine in February 2022, citing what Moscow called threats to Russia's security from a Ukrainian pivot towards the West.
Kyiv and its Western allies say the invasion is an imperial-style land grab.
