Ah - je comprende
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Now I'm on my own time as opposed to the taxpayers, I have access to my Dictionnaire des Synonymes (which I would recommend to any student of French to back up their dictionary) I find the following:
cabale n. I. fig. et lit.
Une cabale montee contre un auteur > complot, conjuration, conspiration, intrigue.
So, my earlier hunch seems to have been right - and conspiracy seems to be the closest english meaning.