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Mexico's president urges radical rethink on drugs policy

13 November 2012 Last updated at 10:20 GMT

Leaders in Latin America have called on the United Nations to examine drug policy in the region, following a move by two US states to legalise marijuana.

Mexico's president Felipe Calderon was joined by political leaders from Costa Rica, Honduras and Belize in calling for the UN to study the effects of the legalisation of the drug by Colorado and Washington state.

Will Grant reports from Mexico City.