Previous American presidents have had tense exchanges with allies. What made this one different was that it featured a US president siding with an autocratic adversary against a nascent democracy.

President Donald Trump said President Zelenskyy is not ready for peace if America is involved." Zelenskyy says otherwise.

GOP congressman said the U.S. isn't "the good guys in this" after Trump and JD Vance's "embarrassing" shouting match with the Ukrainian president.

President Trump, Ukrainian President Zelenskyy and Vice President Vance had a tense exchange about the ongoing war with Russia. Vance asked Zelenskyy if he has ever said "thank you" for U.S. aid and Trump clashed with him over what has been provided.

Watch: Trump tells Zelensky he is 'gambling with World War Three' This video can not be played. To play this video you need to enable JavaScript in your browser.

President Trump will meet with Ukrainian President Zelenskyy. NBC News' Garrett Haake reports more from the White House. Igor Novikov, a former advisor to Ukraine President Zelenskyy, and former U.S.

Trump was asked if he still considered Volodymyr Zelenskyy a “dictator.” “Did I say that? I can’t believe I could say that,” Trump responded. During a conversation with reporters in the Oval Office, Trump acknowledged that his relationship with Zelenskyy could have become tense but expressed a willingness to cooperate with the Ukrainian leader.