A tiny licensing light

I read nu.nl -- a Dutch news website which isn't very good newswise, but whose layout loads quickly on my phone -- fairly often. I was most surprised to find the following tag on a map in an article:

(it's a map of Libya, you can see it if you scroll down). I was surprised to see the map labeled with the GNU FDL. So that means that this particular map can be aggregated into other work (see the GNU FDL v.1.2, section 7). I'm just left wondering why the GNU FDL would be used here .. I hardly expect it to be out of the goodness of their (nu.nl) hearts. I would have guessed Open Street Map derived, but that's CC-BY-SA.