[JURIST] US State Department [official website] Legal Adviser Harold Koh on Thursday defended the killing [JURIST report] of Osama Bin Laden [JURIST news archives] saying it was "consistent with the laws of armed conflict and US military doctrine" in a brief statement [text] published on OpinioJuris.org. Koh referenced a speech he made [JURIST report] in March 2010 defending the use of predator drones to kill US targets where he argued that al Qaeda is an imminent threat to the US,…