Russia's war in Ukraine could lead to a global food crisis

The U.S. on Thursday accused Russia of using food as a weapon in its war on Ukraine, and in turn, creating a global food security crisis. Ukraine grows enough food to feed 400 million people, and Ukraine and Russia together account for a third of the world's wheat exports. But Russia's invasion and blockade of Ukrainian ports are preventing exports of grain and steel. Nick Schifrin reports. PBS NewsHour is supported by - https://www.pbs.org/newshour/about/funders