Here is the full text, longer than actually delivered:
100126 King’s War Studies Lecture, Britain and Genocide.doc. However this is a draft and should NOT be cited.
Here is a link to the definitive published version, for citation.
This appeared on the Review of International Studies website as a FirstView article on 29 Nov. 2010, and will appear in the print journal in 2011. However you’ll need access to a RIS subscription to access this.