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The Washington has enforced penalties on a group of four people and four firms alleged of recruiting South American contractors to fight for and train a Sudanese paramilitary group the United States claims of committing genocide.

Network Composition

Announcing the restrictions on this week, the US Treasury Department stated the network was largely composed of Colombian nationals and companies.

Scores of retired Colombian troops have reportedly travelled to Sudan to combat beside the Sudanese RSF militia, a faction accused of severe violations encompassing ethnically targeted slaughter and mass abductions.

Emergence of Involvement

The role of these mercenaries first came to light in 2024, after an investigation which disclosed that more than 300 former soldiers had been recruited to fight – an discovery that prompted an rare mea culpa from Colombia’s foreign ministry.

Colombian ex-soldiers have historically been seen as highly prized fighters in conflict zones due to their considerable warzone knowledge acquired during years of internal conflict, familiarity with Nato equipment, and elite military instruction.

Reported Actions

In the conflict, the contractors have reportedly trained minors, provided drone warfare training, and engaged in frontline combat. An individual involved remarked that working with child soldiers was "horrific and irrational" but noted that "sadly, that is the nature of conflict".

Named Entities

Among those sanctioned was a dual national, a individual with dual citizenship and retired Colombian military officer based in the United Arab Emirates. The government said he had a central role in hiring and sending ex-military personnel to Sudan. His wife, Claudia Oliveros, was similarly targeted.

Also on the penalty list was Duque Botero, a dual Colombian-Spanish citizen who officials alleged managed a business implicated in processing money and salaries for the recruitment operation. "In 2024 and 2025, American entities connected to Duque engaged in several money transfers, worth millions," the official announcement noted.

Colombian national Mónica Muñoz Ucros was the other individual to be penalized, with the entity she oversaw alleged to have financial transactions linked to Duque and his companies.

"The United States again calls on outside forces to halt the flow of financial and military support to the belligerents," the Treasury said in a statement.

Reaction

Elizabeth Dickinson, from a conflict think tank, labeled the sanctions as a "highly important" development, saying that "identifying the recruiters is the right way to go".

She added that, Colombia recently passed a law ratifying the anti-mercenary convention, designed to limit decades of Colombian involvement in foreign conflicts and transform domestic defense strategy.

Sean McFate, a authority on private military contractors, advised additional measures, saying that "restrictions are needed but not enough for addressing widespread use of contractors".

"It’s an illicit economy and operating from Dubai, which is relatively sanction-proof," he said. The United Arab Emirates has been widely accused of arming the RSF, claims it rejects. "More contractors from Colombia are likely," the expert cautioned.