With 2008 Cluster Munition Convention  entering into force only last Sunday (as previously noted here), OUP is planning to publish an extensive and useful commentary to the treaty.
The Convention on Cluster Munitions A Commentary, Edited by Gro Nystuen and Stuart Casey-Maslen is due to be available in October 2010.
According to the publishers:
 
This Commentary on the Convention on Cluster Munitions is a detailed assessment of the negotiation, content, and implications of the Convention, which is the latest treaty to ban a conventional weapon.  The book describes what cluster munitions are, when and where they have been used, and what steps States Parties will need to consider in order to implement the treaty’s provisions. The Commentary goes systematically through the Convention article by article, explaining the purpose of each provision, its background and negotiation, and the meaning of each paragraph and sub-paragraph.