A cargo ship at the Port of Mariupol, loaded with grain destined for Turkey, in the month before Russia’s invasion of Ukraine. Deliveries from Ukraine and Russia, which account for about a quarter of the world’s grains trade, are becoming complicated, spurring food-security worries. Across Ukraine’s farm belt, silos are bursting with 15 million tons of corn from the autumn harvest, most of which should have been hitting world markets. The stockpiles — about half the corn Ukraine had been expected to export for the season — have become increasingly difficult to get to buyers, providing a glimpse into the turmoil Russia’s war has wrought in the approximately $120 billion global grains trade . Already gummed up by supply-chain bottlenecks, skyrocketing freight rates and weather events, markets are bracing for more upheavals as deliveries from Ukraine and Russia — which together account for about a quarter of the world’s […]