There is a more recent briefing offering some reflections upon the killing of Osama bin Laden through a just war lens,
These Social Issues Briefings come out at (semi-)regular intervals. Each is two or three pages of well-researched information and Christian analysis of a topical Australian social issue with links to further information. The back catalogue is here and you can sign up to the email list here.
Andrew has recently published a book called Joined-up Life: a Christian account of how ethics works, which I highly recommend. I am intending to post a brief review sometime in the next few days when I get a chance.