Since the early 1990s, a significant amount of research has been dedicated to refining the causal mechanisms that lead to the diversionary use of force and the various conditions under which such diversionary actions are most likely. This article focuses specifically on the latter—highlighting the research on the various conditions that create opportunities for states to utilize diversionary tactics—while also emphasizing how these opportunities are connected to specific causal processes for diversionary conflict. While significant attention has been paid to the domestic factors that provide additional opportunities for or constraints on actors to utilize diversionary force, less research has considered the international and dyadic opportunities for diversionary force and the interaction and interplay of these domestic and international, or dyadic, factors. These international and dyadic factors specifically focus on those related to the potential target of diversionary conflict and are an important part of fully understanding the decision-making process of leaders contemplating diversionary tactics. Both the domestic and international opportunities for diversionary force identified in the literature will be considered, specifically those focusing on advancements made in understanding the international and dyadic dimensions of these opportunities and the characteristics of potential target states.
While the movement toward identifying various opportunities for diversionary behavior, both domestic and international, or dyadic, is an important pathway in diversionary research, this approach comes with some significant challenges. First, diversionary motivations are extremely hard to “prove” since leaders have incentives to hide these motives. This problem is compounded as more opportunities for diversionary force are added to the mix—as these opportunities may, in themselves, provide motives for war. For example, rivalry and territorial disputes are shown as international opportunities for diversionary force, yet these factors are also known to be two of the most prominent causes of war between states. Thus, parsing out diversionary motives from other fundamental national security motives becomes increasingly difficult.
While quantitative studies can help uncover broad patterns of potential diversionary behavior, they are less equipped to fully explain the ways that various domestic and international opportunities might interact. Nor can these studies demonstrate whether diversion was actual present within specific cases. Case studies can help fill these gaps by allowing more in-depth analysis of these potential diversionary opportunities. Overall, quantitative studies that help uncover patterns and qualitative studies that investigate diversionary tactics in a single case or set of cases are both important parts of the puzzle. To best understand diversionary conflict, researchers need to rely increasingly on both approaches.