Mexico's president Felipe Caldéron is the latest Latin leader to call for a debate on drugs legalisation. And in the US, liberals and right-wing libertarians are pressing for an end to prohibition. Forty years after President Nixon launched the 'war on drugs' there is a growing momentum to abandon the fight.
"I don't think that marijuana legalization will be a panacea on drug violence in Mexico," said David Shirk, director of the Trans-Border Institute at the University of San Diego. "But legalization could change the nature of the fight. Drugs are so much more profitable than any other form of illicit activity. You take away that profitability, and you cripple the organizations' ability to corrupt the state."