I'll let you in on some insight: Ivory Coast is never the country's name because the leader of Côte d'Ivoire proclaimed that it be called Côte d'Ivoire in all languages. Liechtenstein did a very similar thing.
Ivory Coast is a great country, but...Ivory coast is not Cote d'Ivoire in my language and it never will be. And if I speak English I will always call it Ivory coast. No matter what the president or king or caesar or pope of Ivory coast says. This whole Cote d'Ivoire thing is on of the stupidest things I've ever heard.