More than 4 million Ukrainian refugee children face food and shelter insecurity, exploitation

The United Nations High Commissioner now estimates that 10 million of Ukraine's 41 million people have been displaced from their homes. He's calling it the most rapidly expanding refugee crisis since World War II.

According to UNICEF, that includes more than 4 million children. Stark numbers they released last week said that one Ukrainian child became a refugee every second in the first three weeks of the conflict — about 55 kids per minute.

Joe English is with UNICEF and joins Here & Now host Celeste Headlee to discuss the crisis.