On Straight Talk Africa: Join host Vincent Makori as we take a closer look at America’s political conventions.  The Republican National Convention is taking place this week in Milwaukee, Wisconsin. We'll discuss how political conventions have evolved since they began in the 1830’s and what they can potentially achieve ahead of the November election. Guests include VOA Africa correspondent Carol Van Dam Valk, J. Peter Pham, distinguished fellow at the Atlantic Council and Hans Noel, associate professor of government at Georgetown University.