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FOOD PRICES are coming off their highs. Earlier in the year Russia’s invasion of Ukraine sent prices soaring as a blockade of Ukraine’s southern ports choked off grain exports. In mid-July a UN-brokered agreement saw the resumption of grain shipments from Ukraine, easing global prices. But as one crisis abates, another emerges. Hot, dry summers in Europe and America are crimping the supply of some grains. In July the UN’s Food Price Index, which measures international prices across a basket […]