EXPLAINER: How did Russia-Ukraine war trigger a food crisis?


              FILE - A farmer holds livestock manure that he will use to fertilize crops, due to the increased cost of fertilizer that he says he now can't afford to purchase, in Kiambu, near Nairobi, in Kenya Thursday, March 31, 2022. Together, Russia and Ukraine export nearly a third of the world’s wheat and barley, more than half its sunflower oil and are big suppliers of corn. Russia is the top global fertilizer producer.  (AP Photo/Brian Inganga, File)
            
              FILE - Halimo Hersi, 42, right, buys wheat flour from a shopkeeper in the Hamar-Weyne market in the capital Mogadishu, Somalia Thursday, May 26, 2022. Russian hostilities in Ukraine are preventing grain from leaving the “breadbasket of the world" and making food more expensive across the globe, raising the specter of shortages, hunger and political instability in developing countries. Together, Russia and Ukraine export nearly a third of the world’s wheat and barley, more than half its sunflower oil and are big suppliers of corn. (AP Photo/Farah Abdi Warsameh, File)
            
              FILE - A woman fries potatoes in the low-income Kibera neighborhood of Nairobi, Kenya, Tuesday, April 19, 2022. Russian hostilities in Ukraine are preventing grain from leaving the “breadbasket of the world" and making food more expensive across the globe, raising the specter of shortages, hunger and political instability in developing countries. Together, Russia and Ukraine export nearly a third of the world’s wheat and barley, more than half its sunflower oil and are big suppliers of corn. (AP Photo/Khalil Senosi, File)
            
              FILE - A Russian soldier guards a pier with the grain storage in the background at an area of the Mariupol Sea Port which has recently started its work after heavy fighting in Mariupol, on the territory which is under the Government of the Donetsk People's Republic control, eastern Ukraine, Sunday, June 12, 2022. Russian hostilities in Ukraine are preventing grain from leaving the “breadbasket of the world" and making food more expensive across the globe, raising the specter of shortages, hunger and political instability in developing countries. This photo was taken during a trip organized by the Russian Ministry of Defense. (AP Photo, File)
            
              FILE - Servicemen of Donetsk People's Republic Emergency Ministry work to defuse a Ukrainian mine in an area of the Mariupol Sea Port in Mariupol, in territory under the government of the Donetsk People's Republic, eastern Ukraine, on April 29, 2022. Russian hostilities in Ukraine are preventing grain from leaving the “breadbasket of the world" and making food more expensive across the globe, raising the specter of shortages, hunger and political instability in developing countries. This photo was taken during a trip organized by the Russian Ministry of Defense.  (AP Photo)
            
              FILE - A Russian soldier guards an area next to a field of wheat as foreign journalists work in the Zaporizhzhia region in an area under Russian military control, southeastern Ukraine, Tuesday, June 14, 2022. Russian hostilities in Ukraine are preventing grain from leaving the “breadbasket of the world" and making food more expensive across the globe, raising the specter of shortages, hunger and political instability in developing countries. This photo was taken during a trip organized by the Russian Ministry of Defense. (AP Photo, File)
            
              Weeks of negotiations on safe corridors to get grain out of Ukraine's Black Sea ports have made little progress. mmap shows Northwest Baltic Sea ports.
            
              FILE - The wreckage of a Russian missile lays on a wheat field near Soledar, eastern Ukraine, Monday, June 6, 2022.  Together, Russia and Ukraine export nearly a third of the world’s wheat and barley, more than half its sunflower oil and are big suppliers of corn. Russia is the top global fertilizer producer.  (AP Photo/Bernat Armangue, File)
            
              FILE - Farmer Serhiy gestures standing near a mound of grain in his barn in the village of Ptyche in eastern Donetsk region, Ukraine, Sunday, June 12, 2022. Russian hostilities in Ukraine are preventing grain from leaving the “breadbasket of the world" and making food more expensive across the globe, raising the specter of shortages, hunger and political instability in developing countries. (AP Photo/Efrem Lukatsky, File)
            
              FILE - Farmer Serhiy, a local grain producer, shows a crater left by a Russian shell on his field in the village of Ptyche in eastern Donetsk region, Ukraine, Sunday, June 12, 2022. Russian hostilities in Ukraine are preventing grain from leaving the “breadbasket of the world" and making food more expensive across the globe, raising the specter of shortages, hunger and political instability in developing countries. Together, Russia and Ukraine export nearly a third of the world’s wheat and barley, more than half its sunflower oil and are big suppliers of corn. (AP Photo/Efrem Lukatsky, File)
            
              FILE - A tractor charred by a Russian attack lies inside a warehouse at a grain farm in Cherkaska Lozova, outskirts of Kharkiv, eastern Ukraine, Saturday, May 28, 2022. Russian hostilities in Ukraine are preventing grain from leaving the “breadbasket of the world" and making food more expensive across the globe, raising the specter of shortages, hunger and political instability in developing countries. Together, Russia and Ukraine export nearly a third of the world’s wheat and barley, more than half its sunflower oil and are big suppliers of corn. (AP Photo/Bernat Armangue, File)
            
              FILE - Scattered grain sits inside a warehouse damaged by Russian attacks in Cherkaska Lozova, outskirts of Kharkiv, eastern Ukraine, Saturday, May 28, 2022. Russian hostilities in Ukraine are preventing grain from leaving the “breadbasket of the world" and making food more expensive across the globe, raising the specter of shortages, hunger and political instability in developing countries. Together, Russia and Ukraine export nearly a third of the world’s wheat and barley, more than half its sunflower oil and are big suppliers of corn. (AP Photo/Bernat Armangue, File)
            
              FILE - Smoke from shelling raises on the horizon while farmers seed sunflowers in a field in Cherkaska Lozova, outskirts of Kharkiv, eastern Ukraine, Saturday, May 28, 2022. Russian hostilities in Ukraine are preventing grain from leaving the “breadbasket of the world" and making food more expensive across the globe, raising the specter of shortages, hunger and political instability in developing countries. Together, Russia and Ukraine export nearly a third of the world’s wheat and barley, more than half its sunflower oil and are big suppliers of corn. (AP Photo/Bernat Armangue, File)
            
              FILE - Farmer Serhiy shows his grains in his barn in the village of Ptyche in eastern Donetsk region, Ukraine, Sunday, June 12, 2022. Russian hostilities in Ukraine are preventing grain from leaving the “breadbasket of the world" and making food more expensive across the globe, raising the specter of shortages, hunger and political instability in developing countries. (AP Photo/Efrem Lukatsky, File)
            This satellite image from Maxar Technologies shows fields peppered with artillery craters northwest of Slovyansk, Ukraine, on June 6, 2022. Russia's invasion of Ukraine has disrupted the planting of spring crops and the 2022 harvest and production. (Satellite image ©2022 Maxar Technologies via AP) This satellite image from Maxar Technologies shows a close view of a ship loading grain in Sevastopol, Crimea, on June 12, 2022. (Satellite image ©2022 Maxar Technologies via AP)
EXPLAINER: How did Russia-Ukraine war trigger a food crisis?