Russia’s invasion of Ukraine threatens to cause more disruption to the global food system by dramatically increasing the cost of staple foods and the energy required to transport them. The Black Sea region is responsible for the export of at least 12% of global food calories, so cutting off access to it will have far-reaching effects. Food prices already were soaring as a result of post-pandemic market imbalances and supply-chain pressures, together with climate-related output losses. By the end of last year, the crunch in the global market for wheat and maize had driven up food inflation in S…

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