Five members of the drug cartel "Los Zetas", who allegedly participated in the attack of the Casino Royale past August 25, are presented to the press in Monterrey, Mexico, on February 1, 2012. The particularly callous attack of the casino shocked a nation routinely used to grim murders and high tolls in a drug war that has claimed more than 41,000 lives since Calderon launched a military crackdown in 2006.
Recent marijuana legalization measures in Washington and Colorado have sparked an international dialogue on drug policy, and how to change it.
This is especially true in Latin American countries, where the drug trade has had deadly consequences. So might legalizing marijuana diminish the power of the violent cartels?
Here to talk about that is Sylvia Longmire. She's the author of "Cartel: The Coming Invasion of Mexico's Drug Wars."