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Tomas Bravo / Reuters
Soldiers carry bundles of marijuana towards a bonfire for incineration during the destruction of a plantation in Amata, on the outskirts of Culiacan in Mexico's northwestern state of Sinaloa, November 30, 2010. By killing or capturing at least seven top drug cartel leaders in the past year, the Mexican government is sending a message: "Kingpins, beware." But without confronting deeper problems of corruption, money laundering, weak police and courts, and overcrowded prisons, taking down capos will have little effect on the lucrative drug trade, instead risking more of the violence that is scaring off some investors, security experts say.