"What should President [Barack] Obama and [Republican presidential nominee] Gov. Mitt Romney talk about during [Monday's] foreign policy debate? The force that can make or break a foreign policy: food," author William Lambers, who partnered with the U.N. World Food Programme on the book "Ending World Hunger: School Lunches for Kids Around the World," writes in a Tennessean opinion piece. "There are 870 million people worldwide who suffer from hunger and malnutrition," he notes, adding, "As former Army chief and Secretary of State George Marshall said, 'Food is a vital factor in our foreign policy. And the attitude of Americans toward food can make or break our efforts to achieve peace and security throughout the world.'"