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The US government has levied restrictions on a group of four people and four firms alleged of hiring Colombian mercenaries to combat alongside and instruct a Sudanese paramilitary group the United States claims of genocidal acts.

Group Makeup

Announcing the restrictions on this week, the American treasury stated the operation was largely composed of Colombian citizens and firms.

Hundreds of former Colombian military personnel have been recruited to go to Sudan to fight alongside the RSF paramilitary group, a faction accused of severe violations encompassing ethnically targeted slaughter and mass abductions.

Emergence of Involvement

The participation of ex-soldiers first came to light in 2024, prompted by an inquiry which revealed that hundreds of former soldiers had been contracted to fight – an event that led to an rare mea culpa from the Colombian government.

Former Colombian military have historically been seen as among the world’s most sought-after mercenaries due to their considerable warzone knowledge gleaned from decades of civil war, knowledge of advanced weaponry, and elite military instruction.

Role in the Conflict

In the conflict, the Colombians have reportedly trained underage fighters, taught fighters to pilot drones, and engaged in frontline combat. One source previously stated that instructing minors was "terrible and insane" but commented that "regrettably, war operates that way".

Named Entities

Among those targeted was a retired Colombian officer, a citizen of both Colombia and Italy and former army officer located in the United Arab Emirates. The government alleged he played a pivotal function in enlisting and transporting ex-military personnel to Sudan. His wife, Claudia Oliveros, was similarly targeted.

Also on the sanctions list was Mateo Andrés Duque Botero, a dual national who the Treasury stated ran a firm linked to handling funds and payroll for the network. "In 2024 and 2025, companies in the United States associated with Duque engaged in numerous wire transfers, worth millions," the government release said.

Individual Mónica Muñoz was the fourth individual to be targeted, with the company she managed alleged to have wire transfers connected to Duque and his businesses.

"The United States again calls on outside forces to halt the flow of monetary and weaponry aid to the belligerents," the agency announced.

Analyst Commentary

An expert, senior analyst at the International Crisis Group, called the measures as a "very significant" milestone, noting that "targeting the enablers is the right way to go".

It was also noted that, Colombia recently passed a piece of legislation ratifying the anti-mercenary convention, seeking to reduce decades of Colombian involvement in overseas wars and reshape national security policy.

Another expert, a authority on private military contractors, called for greater wariness, noting that "sanctions are necessary but insufficient for combating widespread use of contractors".

"This is a shadow economy and based out of the Emirates, which is difficult to penalize," he said. The United Arab Emirates has been repeatedly implicated of arming the RSF, claims it rejects. "This trend will probably continue," the expert cautioned.