The Mexican drug trafficker Óscar Nava Valencia, alias "Lobo", who was the leader of the Milenio Cartel, testified this Monday against Genaro García Luna, former Secretary of Public Security who is facing trial in a New York court.
Yilber Vega presents the latest development of the case against the former top-level Mexican official in this video.
Why is the trial of Genaro García Luna important?