Textbook bias

In Environment, 4th edition by Raven & Berg, the textbook for Andy Friedland’s Environmental Studies 2:

During the 1990s the United States continued to depend on foreign energy supplies and was even willing to go to war to ensure that supply remained dependable — witness the 1990 war in the Persian Gulf, which has been at least partly attributed to our dependence on foreign oil. During the conflict, President George H.W. Bush released oil reserves from the Strategic Petroleum Reserve to minimize cost increases due to a demporary disruption in supply. Despite this effort, the increase in energy costss precipitated by the crisis contributed to an economic recession, the only one in the 1990s. (p. 209)