Russia retaliates on oil price cap as eastern Ukraine sees heavy fighting
Russia retaliated on Tuesday against a price cap on its oil imposed by Western countries, while its forces were involved in heavy fighting around the eastern Ukrainian city of Bakhmut.
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### Instruction: Russia retaliates on oil price cap as eastern Ukraine sees heavy fighting

### Response: Russia retaliated on Tuesday against a price cap on its oil imposed by Western countries, while its forces were involved in heavy fighting around the eastern Ukrainian city of Bakhmut.