This is part two of my conversation with Walter. This time we talk about his book 'When Latins's Fight - Why There is No United Stated of South America'. The book provides an account of all the major wars that took place between states in post-independence South America. Doing this allows Walter to not just cover the stories of each conflict, but to pull out some of the common themes that run through them. In this episode he explains how some of these wars came about, what their legacies are and how these rivalries affect the future prospects of the region.