Latin America Daily Security Brief

In the early hours of May 27, a bomb detonated near the Batallón de Infantería Mecanizado No. 6 Cartagena in Riohacha, La Guajira, wounding at least 12 soldiers. Colombia's Army publicly blamed the ELN's Seis de Diciembre front, a unit historically concentrated in the Sierra Nevada de Santa Marta that has expanded aggressively into La Guajira in recent years. The Defense Ministry announced a reward for information identifying those responsible and ordered the preventive closure of the road connecting northern Colombia.

The Riohacha attack came even as both the ELN and the FARC's Central General Staff (Estado Mayor Central) announced separate, unilateral election ceasefires. The ELN's truce is scheduled to run from midnight May 30 through June 2, covering Sunday's first-round vote. The EMC issued a parallel announcement with similar timing. Reuters and The Straits Times confirmed both announcements, though Colombian officials and critics have noted that the ELN's ceasefire announcement and the Riohacha bombing are separated by less than 24 hours.

Sunday's vote features three main contenders: left-wing senator Iván Cepeda, right-leaning Abelardo de la Espriella, and Paloma Valencia. A final poll before the first round shows Cepeda at 44.6% and de la Espriella at 31.6%. Former president Álvaro Uribe has publicly alleged that ELN and EMC factions were using the pre-electoral period to pressure communities in Cauca toward Cepeda — allegations the groups deny.

The ICRC warned this month that the humanitarian consequences of Colombia's armed conflict have reached 'the most serious level of the last decade.' EL PAÍS reports that armed groups threaten communities in 339 of 1,100 municipalities, with 126 at extreme risk. The country's 'total peace' policy under outgoing President Gustavo Petro leaves behind more than 27,000 armed group members across at least 14 active dispute zones, according to Public Forces estimates cited by the Ideas for Peace Foundation.

A joint operation by U.S. Southern Command, Joint Interagency Task Force South, and Colombia's Navy intercepted a go-fast vessel off the Colombian coast. One crew member was killed and two were captured. The crew attempted to jettison the cargo before being stopped. SOUTHCOM publicly credited Colombian naval cooperation for the interdiction.

Bolivia's Congress passed legislation May 27 that significantly lowers the bar for presidential emergency declarations and troop deployment against civil unrest. President Rodrigo Paz had already warned the country is at a 'breaking point' as nearly a month of roadblocks — led by teachers, miners' cooperatives, farmers, and Evo Morales supporters — continues to strangle supply lines in La Paz and El Alto.

Daily economic losses from the blockades are estimated at more than $50 million nationwide, per AP. Food, fuel, and medicine shortages are acute in La Paz and El Alto, which together form Bolivia's largest urban center. Security forces have used tear gas and arrested more than 120 people, with authorities reporting four protest-related deaths including a 12-year-old who could not reach medical care in time.

Paz has tried a political track alongside the security escalation. He offered bonus payments to teachers, reached separate agreements with some mining sectors, slashed his own salary in half, and replaced his labor minister with a lawyer from the Indigenous majority. He also convened a national council to include underrepresented social sectors in economic decision-making. None of these moves have broken the main blockades.

The new congressional authorization does not mandate troop deployment — it gives Paz the legal tool if he chooses to use it. Reuters notes that Paz has so far resisted calls for greater force, partly mindful that previous Bolivian governments that deployed lethal force against protesters faced severe political and legal consequences.

Guatemala has agreed to allow joint U.S. military strikes inside its territory against drug trafficking organizations, the New York Times reported May 28, citing three people familiar with the talks. The agreement has not been formally announced by either government. If confirmed, it represents the first explicitly bilateral military strike agreement in Central America under the Donroe Doctrine.

The Guatemalan Army separately conducted two major anti-narco operations in recent days. 'Operación Cinturón de Fuego' dismantled what officials called the largest narco-lab ever found on the Guatemala-Mexico border, seizing military-grade rifles and precursor chemicals. Defense Minister Henry Sáenz confirmed the find at a press conference. A parallel operation, 'Huracán de Fuego,' targeted the village of Los Laureles in the Petén department, seizing arms, ammunition, a vehicle, and approximately 16,000 marijuana seedlings along with an active marijuana plantation.

Guatemala's anti-trafficking push is occurring along the same corridor that Mexico's cartels use as a southern staging area. The proximity of these operations to the Mexican border, and the timing of the joint-strikes agreement, points to a coordinated regional pressure strategy rather than isolated national enforcement.

Federal forces arrested Isai 'El Chinacate' Martínez in Nogales, Sonora — a key border crossing into Arizona — in a joint Army-federal operation. Security Secretary Omar García Harfuch confirmed the arrest. Martínez is a nephew of Joaquín 'El Chapo' Guzmán and a logistics operator for Los Chapitos, the Sinaloa Cartel faction led by El Chapo's sons. He faces U.S. extradition proceedings, though specific U.S. charges were not released.

Michoacán Governor Carlos Torres Piña publicly accused Colombian mercenaries of operating in the state in service of the CJNG. According to EL PAÍS México, the fighters move in convoys of 8–10 armored trucks and have been conducting operations in the Meseta Purépecha region since May 6. They are fighting rival groups including the Cartel de Los Reyes and remnants of Los Caballeros Templarios over drug production routes and illegal logging. Protests erupted in Morelia last week after two community security members (kuarichas) were killed May 17.

The Colima state government reported a security operation that resulted in five CJNG members detained, two killed, and an armored truck seized. Ballistic plates and vests bearing CJNG markings were recovered and photographed, per Infobae.

Security Secretary García Harfuch stated that intentional homicides have fallen by half since President Claudia Sheinbaum took office. Defense Secretary Ricardo Trevilla Trejo specified that Sinaloa — where the federal government assumed direct security control due to the ongoing Chapitos-Mayos internal war — has the highest military density at 2,500 soldiers, followed by Guerrero and Michoacán.

U.S. Senators Jacky Rosen (D-NV) and John Cornyn (R-TX) introduced a bipartisan bill targeting huachicol — fuel theft by cartels. The bill would require Defense Secretary Pete Hegseth to report on U.S. actions to counter cartel hydrocarbon theft operations, which both senators argue fund broader criminal infrastructure on both sides of the border.

Acting President Delcy Rodríguez issued a renewed call for international sanctions relief at a public address, arguing Venezuela achieved economic growth despite existing restrictions. The statement is consistent with Caracas's post-Maduro diplomatic posture of seeking engagement while resisting structural concessions.

Russian oil operations in Venezuela have effectively recovered to pre-January levels, according to Russian Ambassador Sergey Melik-Baghdasarov. He told Pravda that joint Russian-Venezuelan oil projects rebounded after the disruption caused by Maduro's capture, with production now back to approximately 1.13–1.2 million barrels per day — matching late-2025 output. ExxonMobil CEO Darren Woods has publicly described Venezuela as unattractive for investment given infrastructure conditions, which leaves Russian and Chinese operators with significant structural advantages.

Latin Times reports the U.S. has taken in approximately 10 million barrels of Venezuelan oil since initiating a limited energy partnership with Caracas, though analysts quoted in the piece urge caution given Venezuela's political volatility and infrastructure fragility.

An AP Exclusive published May 28 reports that the Trump administration has told federal prosecutors to stand down on pursuing cases against Venezuela's current leadership. The directive appears linked to the broader energy and diplomatic engagement with Caracas following Maduro's removal. This is a significant shift — the administration is simultaneously prosecuting Maduro and seeking commercial access to Venezuelan oil through the post-Maduro government.

Cuba's Foreign Minister appeared before the UN Security Council in New York to condemn U.S. policy, accusing Secretary of State Marco Rubio of lying about Cuba posing a national security threat. The minister described current U.S. measures as violations of international law and denounced the indictment of Raúl Castro as politically motivated.

China delivered a tranche of humanitarian aid to Cuba this week, per PBS News, as food shortages tied to the island's economic crisis have become severe. The aid arrival coincides with the deepest phase of U.S. pressure since the Trump administration intensified sanctions.

A Russian fuel tanker originally bound for Cuba changed course and did not deliver its cargo, per a New York Times report published May 28. The rerouting leaves Cuba's fuel supply situation more precarious at a moment when Chinese aid has been focused on food rather than energy.

ACLED published new data showing Ecuador's criminal landscape has grown from 24 to 37 distinct organized crime groups. The expansion reflects fragmentation rather than consolidation — more groups, smaller and more volatile. ACLED also found that these groups are increasing the frequency of maritime shipments toward Central America using co-opted fishermen, partly to compensate for higher interdiction risk from U.S. naval operations targeting suspicious vessels.

Ecuador's criminal proliferation comes alongside a World Cup security challenge — Ecuador qualified for the 2026 tournament and domestic fans are rallying around the national team even as urban violence remains elevated in Guayaquil and other coastal cities.

With a presidential runoff set for June 7, the head of Peru's National Mining Society warned Reuters that both candidates' mining policy platforms — which diverge significantly — could jeopardize billions of dollars in investment. The warning reflects investor anxiety about the policy direction of a sector that generates roughly 60% of Peru's export earnings.

Neither candidate has offered a platform that the mining industry considers stable or investment-friendly. The sector is watching closely for any post-election signals on permitting reform, environmental regulations, and community consultation requirements.

Brazil's Army commander publicly acknowledged that the country now perceives real security threats in South America — a notable statement given Brazil's traditional posture of not viewing neighboring states as military threats. He specifically advocated for expanded drone and technology deployment to secure borders, per CPG Click Petróleo e Gás.

Flávio Bolsonaro traveled to Washington and called on the Trump administration to designate Brazil's two largest criminal organizations — the Primeiro Comando da Capital (PCC) and Comando Vermelho — as foreign terrorist organizations. The move would open the door to expanded U.S. sanctions and law enforcement cooperation. No formal U.S. response has been issued.

Interpol's Operation Orca XI, coordinated across 19–20 countries in Latin America and the Caribbean, resulted in the arrest of more than 8,700 individuals and the seizure of 3,308 illegal firearms and 56 metric tons of narcotics. Interpol Secretary General Valdecy Urquiza called it 'real progress' against organized crime. Colombia was cited as a leading contributor to the operation's results.

The operation ran across Mexico, Colombia, Argentina, and 16 other countries simultaneously. The breadth of the sweep reflects the maturation of hemispheric law enforcement coordination — but the volume of drugs and weapons seized also illustrates the scale of what remains in circulation.

Panama and Costa Rica made diplomatic contact on the sidelines of a UN Security Council debate in New York, where Panamanian Foreign Minister Javier Martínez-Acha Vásquez and new Costa Rican Foreign Minister Manuel Tovar agreed to restart a bilateral agenda covering migration, security, and trade. The meeting follows months of escalating tension over Panama's blocking of Costa Rican agro-industrial products.

Panama's Commerce Minister Julio Moltó said Panama wants 'the same rules' for any commercial agreement, reflecting continued Panamanian firmness on phytosanitary standards even while engaging diplomatically. The southern Costa Rica border has also become an active anti-narco corridor, with both governments naming drug trafficking interdiction as a shared priority.

InSight Crime's investigative report (published 3 days ago, flagged as high-quality background) documents that the Nicaraguan government has systematically persecuted political opponents abroad, including hiring assassins to kill exiles in Costa Rica. The piece details the murder of a former Sandinista rebel as a case study in how the Ortega-Murillo regime operates as what InSight Crime calls a 'criminal regime' — using state apparatus to protect allied criminal networks while eliminating political threats. This is analytical background, not a new incident, but it is the most detailed public documentation of this pattern to date.