On why Oxford University Press would publish Lister's book on ISIS

My college, Fred Lawson, sent me this (I cite with his permission):  "Just for the record, As'ad (if anyone still cares about facts these days), the Lister book was published originally by Hurst in London, which is not really an academic press.  It was then picked up by Oxford New York, which seems to have separate editorial policies and standards from those of the head office.  For years, Oxford New York has put out  titles that I'm sure would not pass muster with the staff and referees of the former Clarendon Press."