This chapter examines seven critical approaches to global politics: Marxism, Critical Theory, constructivism, feminism, postmodernism, postcolonial theory, and green theory. In their book The Manifesto of the Communist Party, Karl Marx and Friedrich Engels address the implications for global order of the rise of capitalism and the role of the bourgeoisie as controllers of capital. Their ideas have had a major influence on critical approaches to virtually all aspects of both domestic and global politics. The chapter considers some major strands of Marxist-influenced theory of direct relevance to global politics, including dependency theory, world-system theory, Gramscian theory, and Frankfurt School theory. It also discusses gender theory and compares postmodern/poststructural approaches to global politics with Critical Theory and constructivism in International Relations.