Three features stand out from the literature on Southeast Asia's international relations, written over the last fifty years: the dominance of extra-regional scholarship; an overwhelming emphasis on regional security, and a related preponderance of realist perspectives; and the appearance, consolidation, and ebbing of the perceived utility of Southeast Asia as a useful analytical region. During the 1990s, there has been a questioning of the realist assumptions which have underlain international relations writing on the region, and there has been increased emphasis on economic issues. Southeast Asians are making an increasingly important contribution to the study of their own region's international relations, though mainly in terms of policy-oriented research. The most important recent development has been the questioning of Southeast Asia's usefulness as an analytical region, in view of the growing intensity of economic and security relations between Northeast and Southeast Asia.