Much of the fighting in Mexico can be attributed to turf wars between rival gangs.
Mexico has at least eight separate cartels, which all maintain billion-dollar trafficking routes.
To better understand who is fighting — and over what — check out this map by Stratfor.
For more on the Sinaloa cartel — considered one of the largest and most powerful cartels in the Western Hemisphere — take a look at this excellent series from the Los Angeles Times. The coverage includes an interactive cocaine road map that traces how drugs are smuggled across the border.
Source: Los Angeles Times. Click for interactive version.
And to understand how the Mexican cartels, la Cosa Nostra and the Yakuza fit together, here's a map of the global underworld from Wired.
Source: Wired. Click for interactive version.
(h/t Business Insider)
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