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.

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

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.

The Kremlin on Wednesday rejected the central arguments for U.S. President Donald Trump's rhetorical U-turn on the war in Ukraine, as nationalists and political insiders reacted with a mixture of defiance and mockery.

President Donald Trump "surprised" Ukrainian President Volodymyr Zelenskyy with his sudden support at the United Nations General Assembly. Ukraine is now set to address the U.N. on Wednesday, followed shortly after by Iran.

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.

President Trump’s abrupt shift on the war in Ukraine this week came amid fresh frustration at his counterpart Vladimir Putin, and was intended to apply more pressure on Moscow to come to the negotiating table,

Security experts analyze President Donald Trump's reversal on Ukraine policy as Russia pushes back on his assessment that Ukraine can reclaim all seized territory.