By Sergio Rodriguez Gelfenstein Correction: In the first part of this article published it was stated: “However, Great Britain, after recognizing the independence of Yemen, in 1920s, converted Aden into a protectorate and in 1937, into a colony.” It should say: “However, Great Britain, after recognizing the independence of Yemen, in 1928, converted Aden into a protectorate and in 1937, ...