Entities mentioned:
- Vladimir Putin: Power, Influence, Control
- Donald Trump: Legacy, Recognition, Ambition
- Volodymyr Zelenskyy: Self-preservation, Unity, Determination
- Keir Starmer: Duty, Influence, Unity
- Friedrich Merz: Duty, Influence, Unity
- Emmanuel Macron: Influence, Unity, Leadership
- JD Vance: Duty, Influence, Professional pride
- Gen. Keith Kellogg: Duty, Professional pride, Security

Article Assessment:
Credibility Score: 75/100
Bias Rating: 45/100 (Center)
Sentiment Score: 55/100
Authoritarianism Risk: 35/100 (Generally Democratic)

Bias Analysis:
The article presents multiple perspectives, including those of Russia, the US, and Ukraine, indicating an attempt at balanced reporting. However, there's a slight emphasis on Western viewpoints and actions, which may suggest a subtle Western-centric framing.

Key metric: International Relations and Diplomacy

As a social scientist, I analyze that this article highlights a potential shift in US-Russia relations, centered around nuclear arms control and the ongoing conflict in Ukraine. The upcoming summit between Trump and Putin represents a critical juncture in international diplomacy, with potential ramifications for global security. Putin's praise of US efforts and hints at a possible nuclear deal suggest a strategic positioning ahead of the talks. However, Zelenskyy's skepticism indicates ongoing tensions and complexities in resolving the Ukraine conflict. The involvement of other world leaders and the 'Coalition of the Willing' underscores the global significance of these negotiations. The article suggests a delicate balance of power dynamics, with both Trump and Putin potentially seeking diplomatic victories for domestic and international gain.