Hungarian Prime Minister Viktor Orban openly pushed back against US President Donald Trump, digging in his heels over purchases of Russian energy.

President Trump voiced his disapproval of Russia's recent tactics, saying that the country has spent "millions and millions of dollars in bombs, missiles, ammunition, and lives"

President Donald Trump said on Tuesday that he believes NATO countries should shoot down Russian aircraft when they violate NATO airspace.

ANALYSIS: Trump said Tuesday that Ukraine was "in a position to fight and WIN all of Ukraine back in its original form" — a notable shift appearing to reflect growing frustration with Russia.

The Turkish president is in Washington and seeking deals on defence and energy worth tens of billions of US dollars.

Vladimir Putin's ally, Dmitry Medvedev, issued a harsh rebuke of Donald Trump on Wednesday, saying on Telegram that the U.S. president has "slipped into an alternate reality" after Trump stated on Tuesday that Ukraine can reclaim all territory lost to Russia, marking a sharp shift from his earlier calls for Kyiv to make concessions.

Trump made the comments after Poland became the first member nation to fire at Russian aircraft earlier this month since the start of the Russia-Ukraine war.

"I believe the president is growing incredibly impatient with the Russians right now because he doesn't feel like they're putting enough on the table to end the war," U.S. Vice President JD Vance said.

In a change of tone, President Donald Trump said with backing from the European Union and Nato, Ukraine could take all of its land claimed by Russia.

Russia said on Wednesday it was economically stable and its army was advancing in Ukraine, rejecting comments by U.S. President Donald Trump urging Kyiv to take advantage of Russian economic weakness and seize back all of its captured territory.