Think about the need for shelter, food, potable water, sanitation, health care, and other service provisions as a country endures a complex emergency (war, civil conflict, and political violence). What is the role of international, national, nongovernmental organizations, military, and other humanitarian actors in humanitarian aid, relief, and response? Why are commercial interests a conflict and can compromise public health? Provide an example of a complex emergency and lesson learned that has emerged in the last 10 years.