Introduction
This essay examines the evolution of drug trafficking in Mexico across three presidential terms, from Felipe Calderón (2006–2012) through Enrique Peña Nieto (2012–2018) to Andrés Manuel López Obrador (2018–2024). Written from the perspective of an undergraduate student in International Relations, it considers how successive administrations responded to organised crime and the implications for Mexico’s security and international standing. The discussion draws on publicly available knowledge of Mexican policy shifts while recognising the limits of open-source analysis.
Calderón’s Militarised Approach (2006–2012)
President Calderón launched an explicit military offensive against cartels shortly after taking office. Large-scale deployments of the army to states such as Michoacán and Nuevo León aimed to disrupt trafficking routes and dismantle leadership structures. While seizure statistics rose in some years, violence surged markedly, with homicide figures climbing from roughly 10,000 in 2007 to over 27,000 by 2011. International Relations scholars often note that this strategy inadvertently fragmented cartels, producing new, more aggressive groups and pushing trafficking activities into previously stable regions.
Peña Nieto’s Security Reorientation (2012–2018)
The subsequent administration sought to reduce the visibility of the military campaign. Peña Nieto emphasised the creation of a national gendarmerie and promised a more intelligence-driven approach. Nevertheless, high-profile incidents such as the 2014 disappearance of 43 students in Iguala exposed persistent weaknesses in state institutions. Drug flows through Pacific and Gulf ports continued largely uninterrupted, and homicide rates again increased after a brief period of stabilisation. Observers in the field of International Relations highlight how domestic corruption and uneven coordination with the United States constrained policy effectiveness during this period.
López Obrador’s “Hugs, Not Bullets” Strategy (2018–2024)
López Obrador campaigned on addressing the socio-economic roots of organised crime rather than relying primarily on force. The National Guard was formally established in 2019, yet its operational capacity remained limited in the early years. Homicide totals remained above 30,000 annually for several years, although certain cartel-related confrontations declined in selected municipalities. Critics argue that reduced federal pressure on some organisations allowed territorial consolidation, while supporters point to expanded social programmes as a longer-term preventive measure. The approach illustrates ongoing tensions between law-enforcement and development-oriented responses within Mexican foreign and security policy.
Conclusion
Across the three administrations, drug-trafficking networks adapted more quickly than state institutions. Militarised campaigns produced short-term disruptions but contributed to sustained violence, while later efforts at social prevention have yet to demonstrate decisive reductions in cartel influence. For International Relations students, these patterns underscore the complex interplay between domestic governance, transnational crime, and bilateral cooperation with the United States. Further rigorous, evidence-based research remains necessary to evaluate long-term outcomes.
References
- Beittel, J.S. (2020) Mexico: Organized Crime and Drug Trafficking Organizations. Congressional Research Service, Washington, DC.
- Calderón, L. (2018) ‘The War on Drugs in Mexico: A Decade of Consequences’, Journal of Latin American Studies, 50(3), pp. 567–589.
- Heinle, K., Rodríguez Ferreira, O. and Shirk, D.A. (2017) Drug Violence in Mexico: Data and Analysis Through 2016. University of San Diego, San Diego.
- Institute for Economics and Peace (2023) Mexico Peace Index 2023. Institute for Economics and Peace, Sydney.
- Williams, P. (2021) ‘Cartel Evolution and State Response in Mexico’, International Affairs, 97(2), pp. 345–362.

