Argentina Deploys Troops to Seal Crime-Ridden Border Zone with Brazil

Argentina’s government launched a multi-agency security operation on May 26, 2025, targeting a 25-kilometer stretch of its northeastern border with Brazil, a region long plagued by drug trafficking, smuggling, and contract killings.

Dubbed Operation Guaçurarí, the six-month initiative aims to dismantle criminal networks linked to Brazil’s Primeiro Comando da Capital (PCC) and Comando Vermelho gangs, which operate alongside local groups in Misiones Province.

Federal forces, including the Gendarmería (border police) and Federal Police, will coordinate with Misiones provincial authorities and Brazilian municipal leaders in Santa Catarina state.

Patrols will intensify along Route 14 and near the Bernardo de Irigoyen-Dionísio Cerqueira border crossing, using drones and surveillance aircraft to monitor clandestine routes.

The operation aligns with Plan Roca, a broader military deployment of 10,000 troops across Argentina’s northern borders active since April 2025.

Economic disparities drive the crisis: post-liberalization reforms under President Javier Milei widened price gaps, making Brazilian electronics and fuel 30–50% cheaper in Argentina and fueling smuggling.

Authorities reported seven contract killings tied to criminal groups in 2023 alone, alongside a 400% spike in drug seizures since February 2025. Misiones businesses warn stricter controls could disrupt legal cross-border trade, which contributes 15% of the province’s GDP.

Argentina’s Border Security Surge

Brazil’s federal government expressed surprise at not being consulted, though local mayors endorsed the measures, citing shared security challenges.

Argentine Security Minister Patricia Bullrich emphasized collaboration with Santa Catarina’s police while defending the unilateral action: “This territory was abandoned, allowing crime to metastasize.”

Critics argue the military’s expanded role—authorized to detain civilians under Decree 1112/2024—risks escalating tensions in a region already facing retaliatory attacks on border officers.

The strategy mirrors Argentina’s Plan Güemes, a border fence initiative with Bolivia that reduced illegal crossings by 60% in early 2025. Success hinges on balancing enforcement with economic stability, as Misiones’s legal trade corridors remain vital for regional supply chains.

With 1,300 troops now stationed permanently in high-risk zones, the operation signals Milei’s prioritization of sovereignty over diplomatic niceties, testing ties with Brazil amid a regional battle against transnational crime.