Ukrainian President Volodymyr Zelenskyy said that Kyiv will share its revised peace plan with the United States on Dec. 9. This comes after a day of diplomacy in Europe.

Zelenskyy made trips to London and Brussels as he continues his efforts to finesse a plan put forward by President Donald Trump to end the war between Ukraine and Russia.

Following a Dec. 8 gathering at Number 10 Downing Street with British Prime Minister Keir Starmer, French President Emmanuel Macron, and German Chancellor Friedrich Merz, the Ukrainian leader told reporters that he intended to share the revised plan with Washington.

Answering questions in a WhatsApp chat later on Monday, Zelenskyy said the current U.S. peace plan differs from earlier iterations, saying that it now has 20 points, rather than the previous 28, after what he described as some “obvious anti-Ukrainian points were removed.”

On security guarantees, Zelenskyy said the principal questions to be resolved are: “What if after the end of the war, Russia will start another aggression? What will the partners be ready for? What could Ukraine count on?”

The answers to these questions “must be in the core of the security guarantees for Ukraine,” he said.

“The mood of the Americans, in principle, is for finding a compromise,” he added.

“Of course, there are complex issues related to the territory, and a compromise has not yet been found there.”

Previous versions of the plan have called on Ukraine to relinquish some of its territory to Russia, including Donetsk and Luhansk, but Kyiv’s position has always been that any ceding of land is unacceptable, a view Zelenskyy reiterated.

Following the meeting, the leaders of the UK, France, Germany, and Ukraine called on European allies to maintain pressure on Russian President Vladimir Putin.

“The leaders agreed that, while diplomatic efforts continue, Europe must stand with Ukraine, strengthening its ability to defend against relentless attacks that have left thousands without heat or light,” the British prime minister’s office said in a statement.

“They also discussed positive progress made to use immobilized Russian sovereign assets to support Ukraine’s reconstruction.”

“Ukraine continues to face Russia’s aggression with exceptional courage,” Macron said in a post on X.

“It can count on our support and on our commitment for a just and lasting peace.”

“Ukraine’s fate is Europe’s fate,” Merz posted on X, along with a picture of him embracing Zelenskyy on the steps of Number 10 as Macron and Starmer look on.

“We’re here to see how we can step up our efforts. No one should have any doubt: our support will not falter.”

After his conversation in London, Zelenksyy flew to Brussels, where he met with NATO Secretary-General Mark Rutte, European Commission President Ursula von der Leyen, and European Council President Antonio Costa.

Von der Leyen and Costa said in identical posts on their respective X accounts that “Ukraine’s sovereignty must be respected,” and the nation’s “security must be guaranteed, in the long term, as a first line of defense for our (European) Union.”

Rutte described the conversations between himself, the two EU chiefs, and Zelenskyy as “good.”

Likewise, the Ukrainian president called the meeting “good and productive,” and revealed that he had briefed them on “the situation on the diplomatic track,” as well as that they had “discussed in detail our work with U.S. partners on steps toward peace, security guarantees, and strengthening our resilience.”

Meanwhile, in Moscow, one of the Kremlin’s chief negotiators accused Britain and the EU of actively trying to sabotage peace efforts by pushing Kyiv to continue hostilities.

Putin’s special presidential envoy and Russian Direct Investment Fund CEO Kirill Dmitriev, who was present at the meeting between the Russian president and U.S. officials at the Kremlin last week, posted a picture on X of Zelenskyy, Merz, Macron, and Starmer in Downing Street, captioned “Team ‘War’ is sabotaging Trump’s Peace.”

“Warmongers predictably want to sabotage Trump’s peace plan and keep the war going,” he said in a separate post.

Reuters and the Associated Press contributed to this report.