DAVOS, Switzerland--The head of the U.N.’s World Food Program is telling billionaires it’s “time to step up” as the global threat of food insecurity rises with Russia's war in Ukraine, saying he’s ...

World Food Program Executive Director David Beasley speaks during an interview with The Associated Press at the WFP headquarters in Rome, on Nov. 2, 2021. (AP Photo/Domenico Stinellis, File) UNITED ...