A conditional norm: chemical warfare from colonialism to contemporary civil wars

The norm against chemical weapons (CW) is considered to be a strong and universal restraint against poisonous methods of warfare. Yet the repeated CW attacks during the Syrian civil war have raised questions about the robustness of this international norm. Under what conditions do third parties emphatically sanction violators of the norm? Adopting a historical approach, we analyse the discursive and contextual dynamics characterising the CW attacks since the early twentieth century. Employing process tracing, we consult a variety of rich archival resources including primary language documents to study a number of historical cases including late colonial wars during the interwar period, and Middle Eastern civil wars since the late twentieth century. Building on Judith Butler’s distinction of grievable and ungrievable lives and Didier Fassin’s notion of politics of life, we argue that the anti-CW norm has never had universal status and always remained conditional on a hierarchy of victims. CW attacks targeting certain groups have been more readily justifiable and generated ineffective and inconsistent third-party reactions. Consequently, certain groups, who are implicitly or explicitly perceived to be outside the pale of civilised order, remain more vulnerable to CW attacks than others.