 He used this view to explore the variety of ways in which culture is important to peacekeeping operations.Beginning in the mid-1980s he published a series of articles that show how the success of peacekeeping missions are critically dependent upon understanding the culture of the people among whom the mission works, and the importance of understanding the organizational cultures of the agencies who work together in a mission.He applies this view in medical anthropology where he has made theoretical contributions and also shown how multilevel analysis is critical for understanding racial and ethnic disparities in health.