 Constructivism in IR can be divided into what Ted Hopf (1998) calls "conventional" and "critical" constructivism.Common to all varieties of constructivism is an interest in the role that ideational forces play.The most famous constructivist scholar, Alexander Wendt, noted in a 1992 article in "International Organization" —and later in his 1999 book "Social Theory of International Politics—"that "anarchy is what states make of it".