Over the past two years, COVID-19 has presented many challenges to global food security. Today, what is happening in Russia and Ukraine adds another significant challenge. Russia and Ukraine play a substantial role in the global food production and supply. Russia is the world’s largest exporter of wheat, and Ukraine is the fifth largest. Together, they provide 19% of the world’s barley supply, 14% of wheat, and 4% of maize, making up more than one-third of global cereal exports. They are also lead suppliers of rapeseed and account for 52% of the world’s sunflower oil export market. The global fertilizer supply is also highly concentrated, with Russia as the lead producer.