So now we're talking with Iranian diplomats and they're still not happy.
It wasn't a consulate. It had been there 8 years and still wasn't a consulate, which makes me pretty skeptical about what they mean by it being in the process of becoming one.
If the people who are still being detained had diplomatic immunity, Iran and at least some factions in the Iraqi government would be screaming about it to the press which would be happy to tell the world.
If we find information from this raid that Iranians were coordinating attacks on American troops out of this "diplomatic mission", that should be treated as a act of war by Iran, and Iran itself should be attacked in response.