Leader: Against the grain

In Britain, surging grocery prices are painful, but not life-threatening. For much of the rest of the world, by contrast, food prices are a matter of life or death. China, the world’s largest wheat producer, is suffering a severe winter drought which looks likely to devastate this year’s harvest. It is setting aside a billion dollars to snap up supplies in the market, with the inevitable result that other, poorer countries will lose out.