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"Diplomacy, Antidiplomacy and International Society", in Richard Little and John Williams eds., The Anarchical Society in a Globalized World, (Palgrave, 2006).
"Avenging Evil: A Reconsideration", in Renee Jeffery ed., Confronting Evil in International Relations: Ethical Responses to Problems of Moral Agency, (Palgrave, 2008).