The interruption of wheat exports from Ukraine and Russia, which together account for 28 percent of global exports, along with supply chain disruptions, a severe drought in India that has caused it to ban shipments of grain and Covid-related lockdowns in China, are also causing food prices to spiral and increasing global hunger, particularly in Africa and the Middle East. The question for both American and European policymakers is how to corral leaping prices without sending their economies into recession. The Federal Reserve has begun raising interest rates to tame…