Ukrainian President Volodymyr Zelenskyy and President Donald Trump expressed hope that their critical meeting Monday with European leaders at the White House could lead to three-party talks with Russian President Vladimir Putin to bring an end to his war on Ukraine.

Monday's hastily assembled meeting comes after Trump met on Friday with Putin and has said that the onus is now on Zelenskyy to agree to concessions of land that he said could end the war.

“If everything works out today, we’ll have a trilat," Trump said, referring to possible three-way talks among Zelenskyy, Putin and Trump.

"And see if we can get it finished," he said. "Put this to sleep."

The U.S. president also said he would back European security guarantees for Ukraine as European leaders gathered in Washington to show support for Ukraine at the extraordinary White House meeting.

Trump stopped short of committing U.S. troops to the effort, saying instead that there would be a “NATO-like” security presence but that all those details would be hashed out in their afternoon meeting with EU leaders.

Trump also said he plans to talk to Putin after his meetings with Zelenskyy and European leaders.

Zelenskyy expressed openness to trilateral talks.

“We are ready for trilateral as president said,” Zelenskyy said.

Trump first held one-on-one talks with Zelenskyy. The two later gathered with European Commission President Ursula von der Leyen, French President Emmanuel Macron, British Prime Minister Keir Starmer, German Chancellor Friedrich Merz, Italian Premier Giorgia Meloni, Finnish President Alexander Stubb and NATO Secretary-General Mark Rutte.

The European leaders were left out of Trump's summit with Putin. They want to safeguard Ukraine and the continent from any widening aggression from Moscow. Many arrived at the White House with the explicit goal of protecting Ukraine’s interests — a rare show of diplomatic force.