Joel Breman talks here about the impact of the Cold War, and the operational difficulties that this sometimes created. He also talks about post-colonial nationalism, and how this impacted on negotiations with the USA as plans were made for regional smallpox eradication.

Joel Breman reminds us here that D.A. Henderson has pointed out that all effective ideas about smallpox eradication came from field workers. He highlights the impact of the sharing of movement of ideas, from country to country, and from continent to continent.