The coming food catastrophe

By invading ukraine, Vladimir Putin will destroy the lives of people far from the battlefield—and on a scale even he may regret. The war is battering a global food system weakened by covid-19, climate change and an energy shock. Ukraine’s exports of grain and oilseeds have mostly stopped and Russia’s are threatened. Together, the two countries supply 12% of traded calories. Wheat prices, up 53% since the start of the year, jumped a further 6% on May 16th, after India said it would suspend exports because of an alarming heatwave.

The widely accepted idea of a cost-of-living...