Accident because the Afghans were incompetent? Accident because insurgent fire was originating close to the Paki position and the Afghans thought it was them? Accident because the strike hit the wrong target?
Or not an accident?
I’d put as much effort into determining the who and why of the call-in as anything else. There’s a wild chance that maybe one or two of the the members of the Afghan military are not 100% devoted to our cause (crazy idea, I know, but hypothetically possible) and saw a chance to stir up a little trouble and hamstring logistics by getting us to accidentally whack some friendlies.
Either way, it’s hard to take Pakistan’s outrage all that seriously. Yes, the strike was a regrettable mistake. But if they policed their own territory a bit more effectively, maybe we’d not have to worry about what’s on their side of the border so much.