World food commodity prices were largely unchanged in May, as rising cereal and sugar prices offset weakness in vegetable oils, according to the latest Food and Agriculture Organization (FAO) Food Price Index released Friday.The benchmark index averaged 130.8 points in May. That is down 0.2% from April but still 2.9% higher than a year earlier and 18.4% below its peak reached in March 2022 in the aftermath of the Russian invasion of Ukraine. Cereal prices posted one of the strongest gains among