Vice President Vance said the president's position isn't changing, as allies remain skeptical of a major shift.

UNITED NATIONS -- UNITED NATIONS (AP) — President Donald Trump said Tuesday that he believed Ukraine could win back all territory lost to Russia, a dramatic shift from the U.S. leader’s repeated calls for Kyiv to make concessions to end the war.

President Donald Trump said Tuesday that Ukraine can win back all territory lost to Russia, a dramatic shift from the U.S. leader’s call on Kyiv to make concessions.

Donald Trump's comments backing Kyiv to regain all of its territory from Russia have sparked a mixture of relief and suspicion that the U.S. president is ready to leave Europe more to its own devices in supporting Ukraine.

World leaders reacted to Donald Trump's blunt U.N. speech where he claimed to have ended seven wars and threatened tariffs over Russian energy purchases.

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.

Trump, after meeting with Ukrainian President Volodymyr Zelenskyy on the sidelines of the United Nations General Assembly on Tuesday, wrote on social media that he thinks Ukraine could win back its seized land. For months, Trump had said he believed Ukraine would have to cede territory in order to bring an end Russia's invasion.

Vladimir Putin ally Dmitry Medvedev issued a harsh rebuke of President Donald Trump on Wednesday, saying on Telegram that Trump has "once again fallen into an alternative reality" after the president said Tuesday that Ukraine can reclaim all territory lost to Russia, marking a sharp shift from his earlier calls for Kyiv to make concessions.