The peerless Stephen Ellis on the global drug trade:

A major change in the global cocaine trade is taking place. South American cocaine traders are reacting against the saturation of the North American market, the growing importance of Mexican drug gangs, and effective interdiction along the Caribbean smuggling routes. These factors have induced them to make a strategic shift towards the European market, making use of West Africa's conducive political environment and the existence of well-developed West African smuggling networks.