What is "wadesdah"

Wadesdah is a fictional city in The Adventures of Tintin, the comics series by Belgian cartoonist Hergé. Wadesdah is the capital of the fictional country Khemed in the Arabian peninsula, home of the Emir Mohammed Ben Kalish Ezab. The city is situated between the real cities of Jeddah and Aqaba. Wadesdah is depicted in Land of Black Gold and The Red Sea Sharks.