ABSTRACT
This chapter explores the international migrations from the perimeter of nation-states dominant narratives. It focuses on specific intersections between migrant's trajectories, transformations of borders and frontiers, and shifting imaginings of citizenship. Borders and frontiers were once mere accessories of nation-states. They have been upgraded within border studies to the level of signifiers, within differential exclusion and inclusion, for increasingly shifty globalized identities. If borders are products of human choices and not something that has always existed in nature or that must be taken for granted in mainstream IR theory, then it is possible for international relations theorists to reflect upon the ethical consequences of these socio-political artifacts. The chapter summarizes how contemporary field of IR approaches the study of borders and frontiers, we would certainly underline their progressive de-naturalization. Borders, even if often not clearly distinguished from frontiers, have been liberated from territorial fixity and returned to the social world, to world of humanity where they find their origins.
