Realism, Culture and Grand Strategy: Explaining America's Peculiar Path to World Power

When and why do states adopt new grand strategies? According to a “neoclassical realist” model, changes in international conditions are the chief cause of long-term adjustments in grand strategy, while domestic political-military cultures help specify the precise grand strategies chosen by state officials. What results are outcomes that appear surprising or skewed from a realist perspective. I test the neoclassical realist model against the cases of u.s. strategic adjustment in 1918–1921 as well as 1945–1948 and find that the long-term trajectory of America's rise to world power is best explained by international pressures. The precise strategies chosen in each period, however, were heavily influenced by American political-military culture. The implication is that theoretically inclusive forms of realism can provide convincing explanations for changes in grand strategy; furthermore, states can remain somewhat “differentiated” in terms of their foreign policy behavior, for cultural reasons, and in spite of international pressures to the contrary.