Re: Video
Balfour saw the flash of anger in Itachi's eyes, but let it go when it died out. It had sounded a bit accusatory, the way he said it, but he wasn't trying to accuse anyone, just think of who would have known.
"The only other person I speak to is Izumo, and I'm absolutely positive he doesn't know anything about my life, not that detailed, anyway."
He might have mentioned his brother, but then he did talk about him a lot. Otherwise, there was no way Izumo had gotten the information. Or why he would present it in such a manner if he was the one to do it.