It is the mark of a more competent intelligence service. To infiltrate an enemy safe area and kill a man with a pistol -- or in a manner that looks like an accident -- is the mark of a highly competent clandestine service. How many members of the Haqqani network could we kill this way, if we wanted to do it? Could we walk a man into their compound, pop them, and walk him out again before the body was found? Arrange an accident? Refuse to comment on the operation to the press? Keep the documents from leaking?
Call it a bit of professional acknowledgement, if not strictly appreciation. Via BLACKFIVE: Wet Work is Better.