This report focuses on potential approaches that Europe might employ to diversify its sources of natural gas supply, Russia's role in Europe's natural gas policies, and key factors that could hinder efforts to develop alternative suppliers of natural gas. The report assesses the potential suppliers of natural gas to Europe and the short- to medium-term hurdles needed to be overcome for those suppliers to be credible, long-term providers of natural gas to Europe. The report looks at North Africa, potentially the most realistic supply alternative in the near-term, but notes that the region will have to resolve its current political, economic, and security instability as well as the internal structural changes to the natural gas industry. Central Asia, which may have the greatest amounts of natural gas, would need to construct lengthy pipelines through multiple countries to move its natural gas to Europe.