According to the democratic peace theory, democracies are hesitant to engage in armed conflict with other identified democracies. Contrary to theories explaining war engagement, it is a “theory of peace” outlining motives that dissuade state-sponsored violence. The proposition that democracies are more peaceful than autocracies has spawned a huge literature. Much of the relevant quantitative research has shown that democracies indeed rarely, if ever, fight each other, although they are not necessarily less aggressive than autocracies in general. Although, statistically, the probability of war between any two states is considerably low, the absence of war among liberal democracies across a wide range of different historical, economic, and political factors suggests that there is a strong predisposition against the use of military violence between democratic states. According to scholars, the democratic peace theory can elaborate on the empirical phenomena previously explained by the earlier dominant research program, realism in international relations; in addition, the initial statement that democracies do not, or rarely, wage war on one another, has been followed by a rapidly growing literature on novel empirical regularities. This democratic peace proposition not only challenges the validity of other political systems, but also the prevailing realist account of international relations, which emphasizes balance-of-power calculations and common strategic interests.
Truth commissions are temporary institutions that are tasked with investigating patterns of political violence under a prior regime as part of a process of political change. In the past, truth commissions were generally seen as a “second best” alternative in contexts where prosecuting past abuses was deemed unrealistic. Today, they are regarded as important tools for pursuing a wide array of goals, from democratization and reconciliation to human rights protection and individual healing. Early scholarship on the development of truth commissions focused on comparative democratization and on typologies that could be used to predict various transitional justice outcomes. More recently, scholars in the field of international relations have undertaken qualitative and quantitative studies in hopes of understanding what is driving the development of truth commissions. However, opinions differ as to the causes, consequences, and moral implications of truth commissions. Some attribute the proliferation of truth commissions to the growing strength of human rights norms and advocacy, whereas others argue that they merely function to manage the balance of power in transitional contexts, or serve as a basis for advancing values such as justice, democracy, and peace. These debates seem to have only intensified as truth commission scholarship continues to grow. One interesting pattern is that a number of scholars, have questioned the effectiveness of truth commissions in satisfying their own claims to investigate the “truth” about past abuses.