State commitments and inhumane conventional weapons: An explanatory analysis of treaty ratification

In the last 40 years, the international community has made considerable progress towards the regulation of inhumane conventional weapons (ICWs) by adopting treaties that regulate or ban these weapons. However, many states have still not joined these treaties or have joined them with a considerable delay. These ratification decisions cannot be satisfactorily explained by the existing literature on the origin of ICW treaties, which stress the role of global socialization processes. This article offers a theoretical argument that explains state decisions on the ratification of ICW treaties. It argues that while democracies and countries located in regions with high ratification rates are prone to ratify ICW treaties, an insecure external environment impedes or delays ratification. The argument also claims that security costs resulting from the characteristics of the individual treaties can modify the effects of these explanatory factors. To provide an empirical test for the argument, the article conducts a survival analysis that covers the ratification processes of the three existing ICW treaties.