The direct intervention model is not always the best method, experts say.

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In the future, he will suggest, the UK and its allies must develop a "new model of preventative intervention" focused on identifying threats before they escalate and require a major military deployment.

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Early intervention is central to their model.

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After the parting shots by Robert Gates, the US Defence Secretary, predicting a "dim and dismal" future for Nato if the other members of the alliance do not do more to defend their interests, it is apparent that extending the "Libyan model" of intervention elsewhere in the troubled region would be extremely hard.

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This model addresses screening, assessment, and intervention for intimate partner violence and co-occurring conditions.

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But the 1992 Cable Act, far from being a misstep, as opponents suggest, is a model for pro-consumer, pro-competitive government intervention.

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Both Ms Banerjee and Nitish Kumar, the chief minister of Bihar state, model themselves as champions of federalism, but have had no "qualms in using central intervention powers to suit the interest of their respective parties", observes Mr Kailash.

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