He said: “Russia can start the negotiations with us tomorrow, not waiting for anything, if they pull out from our legal territories.”

Putin said last week that he would sign a peace deal immediately if Ukraine gave up all the occupied territory.

Most Nato countries’ leaders, including Rishi Sunak, attended the summit at the Swiss resort of Bürgenstock near Lucerne although US president Joe Biden ducked out. He instead flew from a G7 meeting in Italy on Friday to Los Angeles to meet Hollywood stars for a fundraising event ahead of this year’s US presidential election.

Instead, Kamala Harris, the vice-president, attended, giving a speech in which she said: “Russia’s aggression is also an attack on international rules and norms.”

Although it fell short of shoring up a global consensus against the Kremlin and failed to lay down steps towards peace or decide on a venue for a follow-up meeting, analysts said that the Swiss summit had still been useful.

Sergey Radchenko, a professor at the School of Advanced International Studies at Johns Hopkins University in Washington DC, described it as an important “solidarity summit”.

He said: “Drumming up support for Kyiv makes a lot of sense, and in the sense that the summit contributes to European resolve to keep Ukraine well-supplied with weapons, it is a step towards peace.”