Yet Mr Obama's main achievement is a change of tone in foreign policy.

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Its main achievement, however, has been to turn the cerrado green.

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At one level, Mr Papandreou does not deserve blame even for seeking a mandate on the summit's main achievement (though he must now be ruing his decision).

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The main achievement of his first term, the clampdown on crime, was achieved largely by William Bratton, the then police commissioner, introducing private-sector management methods to the police force.

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Besides winning Indonesia a seat on the United Nations' new human-rights body, Mr Yudhoyono's main foreign-policy achievement so far has been improved relations with the United States.

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The main prizes - including a lifetime achievement prize for Britpop band Blur - will be handed out at the O2 Arena on 21 February.

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But when asked what was the most important achievement of the reform package, a senior Erdogan adviser made it clear that the main goal was to overhaul the country's judiciary.

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