Russia’s leader, President Vladimir Putin, agreed on Thursday to let European representatives take part in the next round of peace talks on Ukraine, U.S. special envoy Steve Witkoff said. Witkoff and fellow envoy Jared Kushner had met with Putin at the Kremlin for four and a half hours, Politico reported.

“The Europeans will join at the next meeting, which we think is a very big deal, because it’s important, they are our partners and it’s important for them to be involved,” Witkoff told reporters, standing next to Kushner.

“I think progress was made,” Witkoff said, according to CNN, as reported by Meduza. “People didn’t think that we were going to restart trilateral. We’ve restarted it. We’ve set a new meeting.” He did not say when the meeting would happen.

Kushner said the talks had been “very fulsome and detailed,” Euronews reported, citing Reuters. During the meeting, Putin brought up President Donald J. Trump’s plan for a “big, beautiful agreement” that “might involve all of Europe.” “President Trump offers to agree on instruments for European security as a whole,” Putin told the envoys.

The Kremlin also set a condition. Putin aide Yuri Ushakov said the Europeans must first choose between “peace” or “war,” Euronews reported. He was talking about their military support for Ukraine.

The meeting came after two days of talks in Abu Dhabi among American, Russian and Ukrainian teams, with the United States as the go-between. Those talks ended with a deal on a large prisoner exchange. From Moscow, Witkoff and Kushner flew to Dublin to brief Ukraine’s leader, President Volodymyr Zelenskyy. Witkoff said the envoys “will download Zelenskyy on everything that has occurred.”

The European Union has long pushed for a seat at the table, Politico reported. European leaders are set to discuss on Friday whether to name a special envoy for the peace process.