Later this month sees the 17th International AIDS Conference in Vienna. One of the topics that will be discussed there is harm reduction, and the political will to embrace it.In this podcast, we look at the effects of long term opiate substitution programmes in Muirhouse, Edinburgh. Local GP Roy Robertson discusses the research he conducted there. We also travel to Kiev in Ukraine, where Richard Hurley talks to NGOs and injecting drug users about local harm reduction programmes.