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The Washington has levied restrictions on a network of four people and four firms accused of enlisting Colombian mercenaries to support and educate a Sudanese paramilitary group which the US alleges of committing genocide.

Operation Structure

Disclosing the sanctions on Tuesday, the US Treasury Department stated the network was mostly comprised of Colombian nationals and companies.

Numerous of former Colombian military personnel have allegedly journeyed to the Sudanese warzone to operate with the Rapid Support Forces (RSF), a faction accused of severe violations such as targeted ethnic killings and large-scale abductions.

Revelation of Role

The involvement of Colombian fighters was first uncovered the previous year, after an inquiry which revealed that hundreds of retired troops had been recruited to engage in combat – an event that resulted in an unusual statement of regret from Colombia’s foreign ministry.

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

Role in the Conflict

In Sudan, the Colombians have been accused of teaching underage fighters, instructed militiamen in drone operation, and fought directly on the frontlines. An individual involved was quoted as saying that working with child soldiers was "horrific and irrational" but noted that "unfortunately that’s how war is".

Sanctioned Individuals

Among those sanctioned was a dual national, a individual with dual citizenship and retired Colombian military officer operating from the United Arab Emirates. The government accused him a central role in hiring and sending mercenaries to Sudan. His spouse, Claudia Oliveros, was penalized as well.

Also on the restricted list was Duque Botero, a individual with Colombian and Spanish citizenship who authorities say managed a business linked to handling funds and payroll for the network. "In 2024 and 2025, US-based firms linked to Duque carried out multiple financial transactions, worth millions," the Treasury statement said.

Individual Mónica Muñoz Ucros was the fourth individual to be targeted, with the company she managed said to have conducted financial transactions associated with Duque and his companies.

"The United States again calls on external actors to halt the flow of monetary and weaponry aid to the warring parties," the agency stated.

Analyst Commentary

Elizabeth Dickinson, senior analyst at the International Crisis Group, called the actions as a "very significant" milestone, noting that "identifying the recruiters is the correct approach".

She added that, Colombia has enacted a piece of legislation approving the anti-mercenary convention, seeking to reduce decades of Colombian involvement in international fights and reshape domestic defense strategy.

Another expert, a authority on private military contractors, urged more caution, stating that "restrictions are needed but not enough for dealing with rampant mercenarism".

"It’s an illicit economy and centered in Dubai, which is largely insulated from sanctions," he commented. The UAE has been repeatedly implicated of arming the RSF, allegations it disputes. "More contractors from Colombia are likely," McFate warned.