So apparently the Iraq provisional govt didn't count as a government to that judge. That and he also apparently has no idea what a "War Zone" means. This is exactly the sort of thing we'd see all the time, despite assurances we've been given to the contrary, if we signed up for the International Criminal Court. If an American soldier accidentally killed a journalist from Belgium in a war zone, he'd have to be tried in Europe, and you better belive if an Air Force bomber killed some Iraqi insurgents, but their friends claim they were innocent, they'd put him in front of some ultra-left wing judge from France.
No thank-you to that. We investigate our own troops, in our own country, and if we decide that they've done something wrong, we'll punish them for it. That's how it is and how it should continue to be.