Ukraine and Russia are enormous producers of wheat, corn, barley, sunflower oil and fertilizer. One study calculated that the two countries accounted for 12 percent of the world’s calories.With Ukraine under attack and Russia hit with strict sanctions, a huge supply of food is suddenly trapped — with Africa and the Middle East particularly imperiled.Guest: Jack Nicas, the Brazil bureau chief for The New York Times.Want more from The Daily? For one big idea on the news each week from our team, subscribe to our newsletter. Background reading: An increase in world hunger could be one of the repercussions of the war in Ukraine.For more information on today’s episode, visit nytimes.com/thedaily. Transcripts of each episode will be made available by the next workday.