79Nor, fifthly, is there any relevance in the fact that those matters were mentioned in the defence lodged by the Commission with the Court. The defence serves, in particular, to inform the Court of the factual and legal context of the case before it, which forms the backcloth to the contested decision and with which the Court, unlike the parties, is not familiar. The fact that a decision against which an action for annulment is brought omits to mention background matters which would subsequently be brought before the Court in the course of the presentation, by a party, of the circumstances in which the dispute before it has evolved does not therefore, as such, attest a failure to observe the duty to state the reasons for the contested decision.