How can we stop drug traffickers?
Thirty people have been killed in five days of violence as police in Rio de Janeiro, Brazil crackdown on violent drug gangs. What is the best way to tackle South America's drug problem?
Police in Rio de Janeiro say they now have total control of the Vila Cruzeiro shanty town after drug traffickers had regrouped in the area. Suspected gang members had been blocking roads, burning cars and shooting at police stations.
Rio's governor says the violence is retaliation by drugs gangs who have been driven out of some areas by a police pacification programme. The programme is aimed at improving security and the rule of law in Rio, where favelas have been controlled by drug-trafficking gangs for many years.
Should we wage war on drug traffickers? Will Rio's pacification programme work? Should other countries adopt similar schemes? Can the international community do more to help control drug crime in Brazil?
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