Marxist

 Marxist and Neo-Marxist international relations theories are paradigms which reject the realist/liberal view of state conflict or cooperation, instead focusing on the economic and material aspects. It purports to reveal how the economic trumps other concerns, which allows for the elevation of class as the focus of the study. Marxists view the international system as an integrated capitalist system in pursuit of capital accumulation. Thus, the period of colonialism brought in sources for raw materials and captive markets for exports, while decolonialization brought new opportunities in the form of dependence.  Marxist theories receive scant attention in the United States where even moderate socialist and social democratic parties lack mainstream political influence. Throughout Africa, Latin America, South & East Asia, and some parts of Europe, Marxist and other theories are more incorporated into political and social discourse.

Criticisms

Realists and liberals criticize Marxist theories for being outdated particularly after the dissolution of the Soviet Union at the end of the Cold War. Postpositivists disagree with Marxists' elevation of class as the most important aspect.