Mr Sarkozy dare not disagree with Mrs Merkel in public, lest a row destabilises the euro and draws attention to France.

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The islands are isolated volcanic outcrops in the eastern Pacific Ocean, where the introduction of novel species quickly destabilises the archipelago's ecosystems.

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This destabilises existing industries, keeping economic and political power dispersed.

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"In a way it destabilises the music eco-system, " he said.

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