Is this another repeat ? In any case I recognise it as I used to live in the neighbouring country (to the north) as a child due to my dad's job out there at the time, so I know the geography of the region quite well.
Didn't think it was Sardinia, but tried anyway as it seemed close enough in shape. Turns out Sardinia is not even an option. How is it a Diego Garcia UK island group is valid but not a Sardinia? Oh well.