Devil's Bargain: A Former Medellin Cartel Official Has Been A DEA Informant For 27 Years. Now He Wants Out.

It was February 2011, and Toro, who was then 61, had come to this upscale steakhouse in Madrid expecting a casual meal between two friends with business to discuss. His companion was a South American diplomat and high-level cocaine trafficker eager to break into the European drug market, where a kilo purchased for less than $1,000 wholesale back home could sell for more than $40,000 on the street. Toro was a onetime top official in the Colombia-based Medellín cartel, which dominated the global cocaine market in the 1970s and '80s....