The relationship between diplomacy and revolution is often intertwined with the broader issue of the international dimensions of revolution. Diplomacy can offer important insights into both the historical evolution of world order and its evolving functional and normative needs. In other words, the most important dimension of diplomacy, beyond its concrete symbolic and pragmatic operational value, is its very existence as raison de système. A number of scholarly works that explore the link between revolution and the international arena have given rise to a minority subfield of scholarly research and debate which is particularly vibrant and plural. Three basic lines of research can be identified: case studies undertaken by historians and area studies scholars that focus on the international dimensions surrounding particular revolutions; comparative political studies that address the international implications of revolutions by departing from a more comprehensive theoretical framework but still based in comprehensive case studies; and more theoretically comprehensive literature which, in addition to careful case studies, aims to provide a general and far-reaching explanatory theoretical framework on the relationship between revolution and long-term historical change from different perspectives: English school international theory, neorealism, world systems analysis, postmarxism, or constructivism. In a context of growing inequality and global exploitation, the international dimension of revolutions is receiving renewed attention from scholars using innovative critical theoretical approaches.