Initially declined by Volodymyr Zelenskyy, Washington requested approximately $500 billion (€477 billion) worth of mineral resources from Ukraine. The reason for Zelenskyy’s refusal was that the US failed to provide any assurances regarding security guarantees.

Source: https://www.euronews.com/my-europe/2025/02/23/parliament-speaker-ukraine-to-start-work-on-finalising-us-minerals-deal-on-monday