World reacts

In a show of unity, European Commission President Ursula von der Leyen and European Council President Antonio Costa posted identical messages on X right after the row.

"Be strong, be brave, be fearless. You are never alone … We will continue working with you for a just and lasting peace," they wrote.

Outgoing German Chancellor Olaf Scholz and his likely successor Friedrich Merz, French President Emmanuel Macron, Polish Prime Minister Donald Tusk, Spanish Prime Minister Pedro Sanchez and some two dozen other European leaders also sent messages of support.

EU foreign policy chief Kaja Kallas said: "Today, it became clear that the free world needs a new leader. It's up to us Europeans to take this challenge."

Hungarian Prime Minister Viktor Orban was one of the few who sided with Trump. "Strong men make peace, weak men make war," Orban said on X.

Orban and Slovakia's Prime Minister Robert Fico sent a letter on Saturday to European Council President Costa, calling for the EU to engage in direct ceasefire talks with Russia.

A day after the spat, UK Prime Minister Keir Starmer warmly welcomed Zelensky in London, reiterating his support for Kyiv.

During their meeting at Downing Street on Saturday, Starmer said Ukraine has "full backing across the United Kingdom". He stressed Britain's "unwavering determination" to achieve lasting peace.

Britain and Ukraine have agreed on a loan of 2.26 billion pounds ($2.35 billion) to support Ukraine's defense capabilities, according to Ukrainian Finance Minister Serhiy Marchenko.

The Friday spat also made headlines across Europe.

"We just saw the end of our relationship with Trump," the cover of Germany's Frankfurter Allgemeine Zeitung claimed.

"Trump humiliated Zelensky," Spain's newspaper El Pais wrote.

Agencies and Xinhua contributed to this story.