Well, I wouldn't begin to speculate with any specificity, but there could well be dealings among the Government of Canada and third parties--other countries--which, in the judgment of the Government of Canada, could be adversely affected by the disclosure of this document.
I'm speaking hypothetically. Again, I haven't read the document. I'm not trying to defend the position of the government in redacting or claiming this document cannot be fully disclosed. I'm just trying to respond to what I think is the ambit of subsection 15(1), as a lawyer, hypothetically, situated in the Department of Foreign Affairs.