Competition over vital resources is a potent source of international friction among nations and within states. The result is the increasing interplay of international and internal struggles and the growing militarization of the global energy resource quest.
Klare, Michael T.
"Oil. Geopolitics Reborn: Oil, Natural Gas, and Other Vital Resources,"
New England Journal of Public Policy:
2, Article 17.
Available at: http://scholarworks.umb.edu/nejpp/vol21/iss2/17