In Rome this month, Cindy McCain started her new job as executive director of the U.N. World Food Programme, an organization working in 123 countries with the ambitious goal of ending world hunger. She talks with correspondent Seth Doane about the increased political and logistical challenges of feeding the world's neediest, a task made more critical by the pandemic and war in Ukraine; and about the advice she continues to carry with her from her husband, the late Sen. John McCain.