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The US government has imposed sanctions on a operation of four people and four firms charged of enlisting former Colombian soldiers to fight for and train a armed faction in Sudan the United States claims of genocidal acts.

Group Makeup

Announcing the sanctions on Tuesday, the Treasury stated the scheme was primarily made up of Colombian citizens and firms.

Scores of ex-soldiers from Colombia have reportedly travelled to the conflict in Sudan to fight alongside the RSF paramilitary group, a faction linked to severe violations including massacres based on ethnicity and mass abductions.

Discovery of Participation

The involvement of Colombian fighters initially emerged last year, prompted by an investigation which disclosed that more than 300 ex-military personnel had been hired to fight – an discovery that resulted in an unusual statement of regret from the Colombian government.

Colombian ex-soldiers have long been considered as among the world’s most sought-after mercenaries due to their considerable warzone knowledge resulting from decades of civil war, knowledge of Western military gear, and high-level combat training.

Role in the Conflict

In the Sudanese theater, the contractors have been accused of teaching underage fighters, instructed militiamen in drone operation, and fought directly on the frontlines. A mercenary was quoted as saying that instructing minors was "horrific and irrational" but commented that "sadly, that is the nature of conflict".

Named Entities

Among those sanctioned was a retired Colombian officer, a citizen of both Colombia and Italy and retired Colombian military officer based in the Dubai. The Treasury said he had a key part in enlisting and transporting mercenaries to Sudan. His wife, Claudia Viviana Oliveros Forero, was also sanctioned.

Also on the penalty list was Mateo Andrés Duque Botero, a individual with Colombian and Spanish citizenship who authorities say ran a firm accused of processing money and salaries for the scheme. "In 2024 and 2025, US-based firms associated with Duque carried out multiple financial transactions, worth millions," the government release noted.

Citizen of Colombia Mónica Muñoz was the other individual to be sanctioned, with the entity she oversaw alleged to have money transfers connected to Duque and his companies.

"Washington reiterates its demand for outside forces to stop giving financial and military support to the belligerents," the agency said in a statement.

Expert Analysis

A senior analyst, senior analyst at the International Crisis Group, labeled the measures as a "very significant" development, stating that "targeting the enablers is the proper strategy".

She added that, the Colombian government has enacted a statute endorsing the anti-mercenary convention, aiming to curb decades of Colombian involvement in overseas wars and change national security policy.

Sean McFate, a authority on private military contractors, urged more caution, noting that "penalties are required yet incomplete for dealing with widespread use of contractors".

"It operates in the black market and operating from the UAE, which is relatively sanction-proof," he said. The United Arab Emirates has been widely accused of supplying weapons to the paramilitary group, an accusation it has denied. "This trend will probably continue," the expert cautioned.