Montenegro: Is it, or isn't it...

… based on a true story?

That is, is it based on true events, or is it truly based on a story someone wrote?

Yes, the country of Montenegro is a real place. I’d like to go there, it looks fantastic in pictures.

OR

What the hell are you talking about?

The only evidence that I can find is the claim made at the end of the film itself; Wiki’s silent on the subject. I’d heard it was based on the same true story that Shel Silverstein’s “The Ballad of Lucy Jordan” was based on, but again, no cite.