A related but distinct concept of "food security" has been defined by the United Nations Food and Agriculture Organization (FAO) to include, among other aspects: (1) the production of adequate food supplies; (2) stability in the flow of these supplies; and (3) secure access, both physical and economic, to available supplies for those in need of them. Recently, Cuba, unlike most other countries in the world, has had to grapple with these questions under circumstances that would try most people's souls.