How about a "warnings were listened to", and "appropriate actions were taken", thereby "averting an upcoming armed conflict".
John Nott doesn't gut the RN, perhaps they even manage to retain a conventional carrier capability, thereby deterring the Argentinian annexation of the Falklands.
The US tells Sadam in no uncertain terms they will defend Kuwait and pre-deploys forces before the invasion, reversing some of the peace dividend and its associated project cancellations.
Stalin realises Germany is a threat and moves to contain rather than enable them.