Comment by MichaelCollins

I think there is a non-zero chance the culprit has already been identified privately, but won't be identified publicly (at least for many years) for political reasons. There is little to no utility in publicly naming and shaming the culprit if the culprit is your ally or partner; doing so won't bring the pipe back, and would weaken public support for the alliance. Besides a principled commitment to truth for the sake of truth, there would be no rational reason to publicly blame your ally even if you're certain your ally did it.