The Inspector-General of the Australian Defence Force Afghanistan Inquiry Report and the applicability of Additional Protocol II to intervening foreign forces

Abstract This article critiques the articulation of the legal framework applicable to Australian Defence Force operations in Afghanistan found in the Inspector-General of the Australian Defence Force Afghanistan Inquiry Report (Brereton Report). In particular, using the Australian experience in Afghanistan as a case study, the article argues, on the basis of the rules of treaty interpretation, that where a foreign State party to Additional Protocol II (AP II) intervenes in a non-international armed conflict (NIAC) to which AP II applies, that foreign State is bound by AP II, in addition to the host State and non-State armed actors that are parties to the NIAC. The article concludes by outlining the reasons why the Brereton Report's silence in relation to AP II matters.