 Congressman Himes, thank you for your time this morning. We'll be back in a moment. CBS's Face the Nation continues on C-SPAN Radio. We turn now to the executive director of the U.N. agency that helps disadvantaged children in the world's toughest places. UNICEF's Catherine Russell joins us from New York. Good to speak with you again. I know you're just back from Sudan, which is the largest humanitarian crisis on the planet right now. What did you learn?