Entities mentioned:
- Donald Trump: Power, Legacy, Recognition
- Vladimir Putin: Power, Control, Influence
- JD Vance: Duty, Loyalty, Influence
- Volodymyr Zelensky: Self-preservation, Determination, Unity
- European leaders: Security, Influence, Unity
- Steve Witkoff: Duty, Influence, Professional pride
- Friedrich Merz: Unity, Influence, Security
- Marco Rubio: Duty, Influence, Professional pride

Article Assessment:
Credibility Score: 75/100
Bias Rating: 45/100 (Center)
Sentiment Score: 35/100
Authoritarianism Risk: 40/100 (Generally Democratic)

Bias Analysis:
The article presents multiple perspectives, including those of US, European, and Ukrainian officials, providing a balanced view. While it highlights concerns about Trump's approach, it also includes the administration's stance, maintaining a relatively neutral tone.

Key metric: International Diplomacy Effectiveness

As a social scientist, I analyze that this article highlights a significant shift in diplomatic dynamics surrounding the Russia-Ukraine conflict. The sudden announcement of a Trump-Putin meeting without clear inclusion of Ukraine or European allies raises concerns about the US's approach to resolving the conflict. This development could potentially impact the effectiveness of international diplomacy by sidelining key stakeholders and altering established negotiation frameworks. The rushed nature of the summit and the lack of transparency about its contents have prompted a flurry of diplomatic activity from European leaders, indicating a potential weakening of transatlantic cooperation. The exclusion of Zelensky from initial plans could undermine Ukraine's position and sovereignty in peace negotiations. This situation tests the cohesion of Western allies and their ability to present a united front in dealing with Russia, which could have long-term implications for global geopolitical balance and conflict resolution strategies.