Explanation: the cited report was obtained under information access law. That's when someone (medias most time) ask for some government (internal) documents access. The legislator can decide to redact parts of it upon release, and for any reason (theath to national security is most often cited). Please understand this report was never to be made public, for the same reason FBI's briefs to POTUS don't get published.
Of course, seeing one getting all worked up upon reading about _censor_ or _censorship_ is understandable given the context was left out, mostly because the National Post audience is local, and the editing line is flirting with propaganda, as this particular piece's purpose was to deliberatebly stain actual government's image.