Perhaps the wording is not accurate on my part. It is not "just" for Diplomatic purposes.
My wife has had this visa before (Non-F), she works for the UN. It can be issued on a regular passport.
We just want to know if anyone has been successful applying it from Cambodia or not given the different set of rules the specific consulates around the world have for visa applications.
(Ie. Can apply for Tourist Visa from Cambodia, but not from France if you're not a resident).