Marxism focuses on how economic relationships explain state behavior and views capitalism as exploitative, traditionally through class exploitation. However, the decline of the Soviet Union reduced Marxist thinking until the 2008 financial crisis provoked a resurgence. Marxism in international relations sees class exploitation occurring internationally and imperialism as a means for developed countries' elites to exploit resources. Gramscianism reformulated Marxism to emphasize elites' cultural hegemony and control of civil society. Critical theory argues ideology, not economics or culture, best explains state behavior. Both Marxism and critical theory offer unique perspectives on exploitation that realism and liberalism lack. However, they are also seen as overly utopian and not offering practical solutions for national security