"We have many friends who are willing to help us organise such events. One of our friends is the president of the United Arab Emirates," Putin said standing next to UAE leader Mohamed bin Zayed Al Nahyan, adding "it (the UAE) would be one of the quite suitable places".

The Kremlin said Thursday that a summit between Donald Trump and Vladimir Putin was set for the "coming days", both sides having already agreed the venue "in principle".

The Russian President, however, said that "conditions" for a potential meeting with Volodymyr Zelensky had not been met, hours after the Ukrainian leader repeated a call for direct talks.

"I have nothing against it in general, it is possible, but certain conditions must be created for this. But unfortunately, we are still far from creating such conditions," Putin told reporters at the Kremlin.

The summit between Trump and Putin would be the first between sitting US and Russian presidents since Joe Biden met Putin in Geneva in June 2021.

It comes as Trump seeks to broker an end to Russia's military operation on Ukraine.

Three rounds of direct talks between Moscow and Kyiv have failed to yield any progress towards a ceasefire. The two sides appear as far apart as ever in the conditions they have set for an end to the more than three-year-long conflict.

Trump said Wednesday he was likely to meet Putin face-to-face "very soon." They last sat together in 2019 at G20 summit meeting in Japan but have spoken by phone several times since Trump returned to the White House.

"At the suggestion of the American side, an agreement has been reached in principle to hold a bilateral summit in the coming days," Kremlin aide Yuri Ushakov said Thursday in a Kremlin statement.

"We are now starting to work out the details together with our American colleagues," he added.

The Kremlin said a venue had also been agreed "in principle", but did not name it.

"Next week has been set as a target date," said Ushakov.