I tried to use only UN approved names. « Somaliland » isn't on unterm.un.org, it's why there is two Somalia. I'm pretty sure that Eritrea isn't on the map because of a display bug.

Definitively, if you are making a map, your have to make geopolitical chooses. And yes, I have edited NE data to highlight the geopolitical choices that I think are the simplest to defend.