The English version of the AZ website defines medium-haul as flights with a sector length > 3hrs 10 mins when describing availability of inflight entertainment in business:
Originally Posted by AZ Website
In addition, starting July 1, a selection of Italian and international movies from the latest season will be shown on medium haul flights (lasting more than 3h10min).
If the same definition is used for catering purposes, this would rule out all European destinations other than SVO and LED as well as all North African destinations other than CAI. Put differently, this would mean Middle East and Russia only.