US President Donald Trump has effectively blamed Ukrainian leader Volodymyr Zelensky for Russia's invasion, as French President Emmanuel Macron prepares for another round of talks with EU and non-European partners.

Zelensky previously criticised the US-Russia talks for excluding Kyiv, saying efforts to end the war must be "fair and involve European countries. The Ukrainian leader's comments appeared to incense Trump, who launched a series of verbal attacks on Zelensky.

"I'm very disappointed, I hear that they're upset about not having a seat," Trump told reporters at his Mar-a-Lago resort in Florida on Tuesday evening.

"Today I heard, 'oh, well, we weren't invited.' Well, you've been there for three years... You should have never started it. You could have made a deal."

Trump also suggested he could meet Russian President Vladimir Putin before the end of the month in Saudi Arabia as he overhauls Washington's stance towards Moscow -- a shift that has alarmed European leaders, reports AFP.

Earlier Tuesday, Russia and the United States had agreed to establish teams to negotiate a path to ending the war in Ukraine after talks that drew a strong rebuke from Kyiv, with Zelensky postponing his own trip to Saudi Arabia.

Zelensky said yesterday that Russia's leadership are "liars" after a Russian drone attack overnight that followed talks in Saudi Arabia. "We must never forget that Russia is ruled by pathological liars -- they cannot be trusted and must be pressured. For the sake of peace," he said on social media.

He also said Trump was living in a Russian "disinformation space". "We want security guarantees this year, because we want to end the war this year," Zelensky said during a press conference in Kyiv yesterday.

Meanwhile, Keith Kellogg, Trump's Ukraine envoy, arrived in Kyiv yesterday to meet with Zelensky and "listen," as the war against Russia approaches its three-year mark, reports Reuters.

EU countries yesterday agreed a new round of sanctions on Russia, diplomats said, as the bloc looks to keep up pressure in the face of US talks with Russia.

The wide-ranging package -- which includes a ban on imports of Russian aluminium --  will be formally adopted by EU foreign ministers on Monday, the third anniversary of Kremlin's invasion of Ukraine.

France's Macron announced another meeting in Paris on Ukraine after the US-Russia talks, adding that Trump "can restart a useful dialogue" with Putin.

Trump also increased pressure on Zelensky to hold elections -- echoing one of Moscow's key demands.