I wonder if Acceptable Targets is the right trope for that, yeah. The game definitely pulls the rug out from under the player by depicting vaguely Middle-Eastern "insurgents" and then having the vast majority of enemies turn out to be American soldiers, and the "insurgents" vaguely sympathetic. What Measure Is A Mook, maybe? That example is a line spoken by the very first enemies you meet, the guys Lugo talks to in Farsi. That's one of their (untranslated and non-subtitled) lines.

Take it to the relevant thread in Special Efforts. I doubt it, though - he's got too much Well Intentioned Extremist going on. A Complete Monster must be complete.