S-Directive exists -- that's all a junior operative can be
certain of. Most probably privately believe that it's a black
division funded with money from the CIA, MI6, possibly even
someone else, but, truthfully, nothing is certain. That
information is need to know, and according to their superiors,
there is no need for them to know, only to operate as told.
What you begin to suspect as you officially end your training
period, is that, truly, nothing, no action, no matter how dark,
is truly beyond S-Directive. It may truly be all a matter of
degrees...