Yes. The case-by-case privilege makes a lot of sense because, certainly, CSIS will tell you this enables us to give an ironclad guarantee to all our human sources, that there will never be any identifying information. That's not quite right in law, I must say, because the “innocence at stake” exception also applies to people who become material witnesses or agents during a counterterrorism investigation.
Given the breadth of terrorism offences, it may very well be that CSIS sources may actually lose that privilege. It seems to me that, at the end of the day, this is a difficult area. Absolutes are frankly not possible. That's why I would prefer a case-by-case judicial decision and tailor it.