Putin’s energy blackmailing of Europe represents the ‘end of the global oil market,’ top energy historian says
Putin has tried using energy as a weapon against the West this year, but he risks going too far.
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### Instruction: Putin’s energy blackmailing of Europe represents the ‘end of the global oil market,’ top energy historian says

### Response: Putin has tried using energy as a weapon against the West this year, but he risks going too far.