"Be defence forces of (checks profile) one-of-the-five nation states" is not a standard of negotiation requirement I deem attainable for just about anyone that isn't one of the five or EU the union.
But having an older version can be useful too because some features from previous releases may be missing in current ones, so that's a way to ensure access to the old files. A couple of years ago all the Pantone colours used in Photoshop just became black after an update because Adobe stopped licensing Pantone stuff.