The second was the "Bottom Up Review." Billed as a comprehensive review of U.S. military policy in the post-cold war era, its results disappointed many. As a congress person, Aspin had advocated a win-hold-win" strategy in which the United States would possess an armed force capable of defeating an aggressor in one setting while simultaneously using air power to hold another aggressor at bay. Once the first aggressor was defeated, the United States would turn its full resources to bear against the second and defeat it as well. Instead of embracing this strategy, the Bottom Up Review reaffirmed the "two-war" strategy that had been guiding U.S. force decision. Under this policy, the United States needs the simultaneous ability to fight and win two wars.