This paper intent through a sociological approach to interpret the evolvement process of social movements in the international arms control politics, and the construction of a landmine new interpretation. These new international actors action has grown since the 1990’s in areas of international politics that traditionally are viewed as exclusive to interstate debate. So, in reason to deal with this change and discuss the contribution that a diversity of actors can bring to international politics, this paper rescue social science authors to explain international relations as social relations. Thus, based on Anthony Giddens’, Erving Goffman’s, David Snow’s and Robert Benford’s work it presupposes actors able to reflect about reality through the creation of frames. The same is with social movements, which reflect reality based on collective frames created by them. By the collection of distinct information through transnational nets, social movements form new clippings and new perceptions of reality according to its objectives. Relating to landmines prohibition, this perception prioritized humanitarian aspects of this weapon, which resulted in an injustice connotation of the use of landmines and then of the landmines itself. In addition, it is interesting to note the relevance that participants and support to landmines campaigns had in this new frame construction, since it constrains in many ways the formulation of a new interpretation.