In order to determine the morality of the hypothetical shooting, you must establish who morally deserves sovereignty over Iraq and Afghanistan. (An inherently political question.) If America deserves sovereignty, you're right, it's like releasing documents from the WPP. If the insurgents have sovereignty however, it's akin to releasing documents detailing a drug smuggling ring.

So in short, you ask us to take politics out of the equation, and quietly assume your own politics as a given value.