ROME -- Prices for food commodities like grains and vegetable oils reached their highest levels ever last month largely because of Russia's war in Ukraine and the “massive supply disruptions” it is causing, threatening millions of people in Africa, the Middle East and elsewhere with hunger and malnourishment, the United Nations said Friday.The U.N. Food and Agriculture Organization said its Food Price Index, which tracks monthly changes in international prices for a basket of commodities, averaged 159.3 points last month, up 12.6% from February. As it is, the February index was the highest level since its inception in 1990.FAO said...