Russia's withdrawal from a crucial grain-exporting deal with Ukraine has caused wheat and corn prices to rise on global markets. This is a setback for Ukraine's exports through the Black Sea, as it is a major wheat and corn exporter. The move by Russia has complicated the export scenario, as it was anticipated that both Ukraine and Russia would see significant drops in their exportable supplies, further impacting international markets that have already been disrupted by conflict, climate change, and rising energy prices.