The need to cap Russian oil prices is increasingly urgent as Moscow ramps up troops, says Ukrainian presidential advisor
Limiting Russian oil prices will reduce Moscow's access to "blood money" used for its war, a top advisor to Ukraine's president told Reuters.
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### Instruction: The need to cap Russian oil prices is increasingly urgent as Moscow ramps up troops, says Ukrainian presidential advisor

### Response: Limiting Russian oil prices will reduce Moscow's access to "blood money" used for its war, a top advisor to Ukraine's president told Reuters.