The disagreement arose when Vice President Vance accused President Zelensky of being ungrateful, challenging Ukraine's negotiation stance with Russia. This prompted a strong defense from Zelensky, leading to a heated exchange with President Trump. Trump accused Zelensky of gambling with millions of lives and risking World War III, reflecting the frustration surrounding Ukraine's ongoing conflict with Russia. The intensity of the confrontation led to visible distress among diplomats and an early departure by Zelensky, foregoing a planned agreement signing.

The fallout from the meeting triggered a wave of international reactions, with European leaders largely expressing solidarity with Ukraine and condemning Russian aggression. French President Emmanuel Macron and other leaders reaffirmed their support for Ukraine. Conversely, Hungary's Prime Minister Viktor Orban voiced support for Trump, highlighting the divided international response. Despite the tensions, NATO Secretary General Mark Rutte emphasized the need to rebuild relations, underscoring the complex diplomatic challenges ahead for both the U.S. and Ukraine.

The Trump-Zelensky meeting ended abruptly after heated accusations of Ukrainian ingratitude and risking World War III. This diplomatic clash underscores the fragility of international alliances amidst ongoing geopolitical tensions and the need for careful management of relationships.