A worker is seen at the Tawke oil refinery in the autonomous Iraqi region of Kurdistan in 2009. US energy giant Chevron said Thursday it had bought two exploration blocks in Iraq's autonomous Kurdish

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A worker is seen at the Tawke oil refinery in the autonomous Iraqi region of Kurdistan in 2009. US energy giant Chevron said Thursday it had bought two exploration blocks in Iraq's autonomous Kurdish region, despite Baghdad's protests that such deals are illegal.

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