French language and English language do not try to list all the countries spoken in the info box. Spanish language does. Personally, I find such a long list intrusive. Note that under official Arabic countries, the list is collapsed. I suppose one could argue that it should also be fully expanded, but that would be rather annoying. Perhaps a collapsed list would work for the countries spoken in as well ("The Middle East and North Africa (see list)"), and for Malta, we could simply enforce the sourcing rules.  

 Now that I've taken a look at this, I notice a couple errors. Arabic is not a native language in Somalia or Djibouti, and so I believe those countries should be removed from the list. (It is a native language in Eritrea, among a small Rashaida community.) Or perhaps we could tack them on at the end with "also official in S & Dj (see below), and a liturgical language ..."