[LeBeau]

This isn't directly related to Geopolitics specifically, but I'm sure some people in this thread would find a comprehensive overview of Oil useful. It has definitely given me a better understanding of the world as well as the financial side of energy. The top reviews give a great breakdown on why this should be on everyone's shelf:

http://www.amazon.com/books/dp/0982039204



Also the author posted a unique video on his blog of a whale at a deep sea oil well:

http://scarcewhales.blogspot.ca/