Russia's invasion of Ukraine has struck a major blow to global markets for vital commodities—particularly grains like wheat and maize. Shortages and price increases are contributing to the food insecurity crisis in certain parts of the world, according to the United Nations, and to more general economic uncertainty. A new study led by Adam Rose, research professor at the USC Sol Price School of Public Policy and its Center for Risk and Economic Analysis of Threats and Emergencies (CREATE), estimates that disruption to exports of grain commodities during a projected one-year period of the war will result in a $1.6 billion loss for the global economy.