Food prices around the world increased when Russia invaded Ukraine last year partly because Ukraine is a big grain exporter. Ukrainian farmers left their fields to either fight in the war or go to safer places. In many places, food production stopped. Before the war, Ukraine was the fourth-largest corn exporter and fifth largest wheat exporter. Much of the grain went to poor countries in Africa and the Middle East. But grain production will take years to get back to normal once the war ends. Experts say it might take decades.