ELN Guerrilla Group Launches Deadly Attack on Colombian Military Base

On December 19, 2025, Colombia's National Liberation Army (ELN) launched a drone and explosive attack on a military base in Aguachica, near the Venezuelan border, resulting in the deaths of seven soldiers and injuries to 30 others. This incident marks the second violent confrontation between the ELN and Colombian security forces within a week, following the killing of two police officers in Cali just days earlier.

The Guardian

Founded in 1964 and inspired by the Cuban revolution, the ELN is the oldest active guerrilla group in the Americas. The organization has a significant presence in Colombia, controlling key drug-producing regions and operating in over 20% of the country’s municipalities. Despite ongoing efforts to negotiate peace, talks have repeatedly stalled, exacerbating the violence in the region.

The Guardian

The attack on the military outpost is part of a broader pattern of escalating violence attributed to the ELN, which has increasingly utilized drones and explosives in its operations. Pedro Sánchez, Colombia's defense minister, condemned the attack, stating, “I categorically reject the ELN’s terrorist action using drones and launching of explosive devices against a Military Base … with the regrettable loss of 6 of our soldiers and at least about 28 soldiers wounded.” Videos shared on social media depicted the aftermath, showing wounded soldiers being transported to medical facilities.

The Guardian

The attack occurs against a backdrop of strained relations between Colombia and the United States. In October 2025, the U.S. imposed sanctions on Colombian President Gustavo Petro, citing his perceived inaction against armed groups involved in cocaine trafficking. Petro, a former guerrilla himself, has sought to engage these factions in dialogue rather than pursue military action, but these negotiations have faltered. The U.S. has warned Petro about the implications of Colombia's status as the world's leading cocaine producer, with the ELN being a significant player in this illicit trade.

The Guardian

While the ELN claims to be motivated by leftist and nationalist ideals, it is deeply entrenched in the drug trade, making it one of the most powerful organized crime groups in the region. The group has also expanded its influence into Venezuela, operating in eight of the country's 24 states, which has further bolstered its financial and territorial control.

The Guardian

Critics of the ELN argue that the group’s actions undermine any potential for peace and stability in Colombia. The continued violence has prompted calls for a more robust military response from the Colombian government, particularly in light of the recent attacks.

The Guardian

There are discrepancies regarding the exact number of casualties from the recent attack, with some reports indicating the death toll may vary. Additionally, the effectiveness of President Petro's approach to negotiations with armed groups remains a contentious issue, with differing opinions on the best path forward for Colombia.

The Guardian

• “I categorically reject the ELN’s terrorist action using drones and launching of explosive devices against a Military Base … with the regrettable loss of 6 of our soldiers and at least about 28 soldiers wounded,” — Pedro Sánchez, Colombia’s Defense Minister

The Guardian

This recent escalation in violence underscores the ongoing challenges Colombia faces in addressing both guerrilla warfare and drug trafficking, as the ELN continues to assert its influence amid a complex political landscape.

The Guardian