Mr Thiessen has learned the hard way to bring some uncertainty back into his game, but foreign-exchange intervention will not have lasting effects without other supporting measures.

ECONOMIST: The Canadian dollar

Sensing the inevitable side-effects of any military intervention in the Sahara, which had the potential to push back home the Islamist problem, the Algerian government has tried for a long time to promote a negotiated solution to the stalemate in northern Mali.

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Other factors which can reduce the effects of marginalization are improved early intervention and maternal health, the removal of school fees, the provision of teaching and learning materials, building schools closer to isolated communities, and improving teacher training.

UNESCO: WORLDWIDE

He is a developmental and community psychologist whose research focuses on the development of young children in ethnically diverse and immigrant families and the effects of public policies and early childhood intervention on children.

WHITEHOUSE: President Obama Announces More Key Administration Posts

Worsening shortages of food and medicine in both eastern and western Libya mean that a conflict prolonged and intensified by outside intervention could create a nationwide humanitarian disaster, whose effects will spill over into those countries that may have the best chance of a successful political transition to more representative government.

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The obvious policy response is intervention to cap the sterling rate, build up foreign-exchange reserves, and offset the monetary effects by issuing sterling debt.

ECONOMIST: Letters

This is a flow variable and so should largely exclude currency valuation effects, but the drawback is that it will usually overstate the amount of official FX intervention as it includes monthly foreign exchange transactions by the PBoC and commercial banks.

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