So reference [1] says: > in the case of a proceeding suppression order or an order under section 26(1), must specify the applicable ground or grounds "applic

So reference [1] says: > in the case of a proceeding suppression order or an order under section 26(1), must specify the applicable ground or grounds "applicable" would seem to be the operative word here. The problem is that the grounds are not applicable to the stated purpose. You would have to concoct quite an elaborate story to rationalise that saving some foreign politicians from embarrassment is supportable on grounds of national security.