By Christopher Hernandez-Roy, Henry Ziemer, and Azucena Duarte

Although only 8 percent of the world lives in Latin America and the Caribbean (LAC), the region accounts for a third of all homicides worldwide. LAC cities consistently top international rankings as some of the most violent locales outside of active conflict zones. Behind this insecurity are powerful and deeply entrenched transnational criminal organizations (TCOs) trafficking drugs and other illegal commodities, who in turn rely on a seemingly endless flow of illicit firearms to carry out their campaigns of violence and intimidation on the Western Hemisphere’s inhabitants. Arms trafficking goes well beyond a law enforcement challenge; the proliferation of semi- and fully automatic rifles, grenade launchers, and various high-caliber weapons are increasingly used by TCOs to hold at risk the very sovereignty of LAC governments. Stories from Mexico, Haiti, Ecuador, and beyond all underscore how the scourge of illicit weapons, and the groups who wield them, can plunge communities, and even whole countries, into violence.

Leveraging new data sources, this report examines the prevalence and patterns of arms trafficking within and between each of the four subregions. Recognizing the nature of the threat arms trafficking presents to the Western Hemisphere at large, the report seeks to define the contours of a new strategy to combat illegal guns, concluding with recommendations for the United States, Mexico, Central America, South America, and the Caribbean to pursue.

Washington, DC: Center for Strategic and International Studies (CSIS), 2024.