Once upon a time, international political economy (as it is studied by American international relations professors) and international political economy (as it is studied by Marxists and marxisants) knew each other well. The realist Robert Gilpin, whose book on international political economy is still assigned in PhD seminars, disagreed with Marxism, but took it for granted that it was one of the major approaches in the field. Admittedly, studying the international economy through the lens of politics, as both Marxist and non-Marxist international political economists wanted to do, was seen by some as faintly subversive. Peter Gourevitch’s famous (among international relations scholars) article on how international forces shaped domestic economies was not notably ideological, but was nonetheless rejected as “Marxist claptrap” by one of the leading journals in the field.