US President Donald Trump has said that Ukraine's territorial shape would be different after the fighting stops, predicting that the war between Russia and Ukraine would soon come to an end.

Trump told Ross Douthat on CBS News' 60 Minutes program on Sunday that he was confident that his administration was close to brokering a peace deal between Ukraine and Russia.

"I think we're going to have it done and I think it's going to happen and they're going to end up with a little bit different shape," he said.

"I believe that war is going to end and it's going to end soon, and the only reason it's going to end is because of me," he added, claiming that if he had been the president in 2022, he would not have allowed the war to start.

Asked what the biggest obstacle to a peace deal has been so far, Trump said animosity between the two countries' leaders.

"It was the hatred between [Ukrainian President Volodymyr] Zelenskyy and [Russian President Vladimir] Putin,' he said, reiterating that he was "very close to making a deal."

Asked who he trusts more, Putin or Zelensky, Trump said, "Well, I'd rather not say, but I get along with both."

"There's been nobody that's been tougher on Russia than me," he claimed, defending his decision to allow Russian oil exports despite criticism that the move had eased pressure on Moscow.

Trump backs Russia’s land-for-peace plan to end Ukraine war: Report

US President Donald Trump has told his European counterparts he had agreed with Russian President Vladimir Putin’s demand that Ukraine make territorial concessions to end the conflict, says a report.

He also said Washington continued supplying weapons to Ukraine but emphasized that European countries were purchasing them from the US at full price.

"I give it to Europe, sell it at full price and they pay us," he said.

Asked about reports that Ukraine's access to Elon Musk's Starlink satellite system had been restricted, Trump said he did not know who was responsible.

"I can't tell you who turned it down. I can tell you ultimately he turned it back up and so they have it," he said.

In recent months, Trump has blamed the war in Ukraine for contributing to rising fuel prices in the US.

Higher prices, along with the US war on Iran and growing public criticism of the Israeli regime, have been cited as factors behind last week's Democratic gains in the midterm elections.

Speaking to reporters on Monday, Trump said he would likely meet with Putin and Chinese President Xi Jinping next week in China to discuss ending the US-Israeli war on Iran as well.