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The Washington has levied restrictions on a group of four individuals and four companies accused of enlisting Colombian mercenaries to combat alongside and instruct a militia force in Sudan the United States claims of committing genocide.

Operation Structure

Revealing the restrictions on this week, the US Treasury Department stated the network was largely composed of Colombian citizens and firms.

Scores of retired Colombian troops have been recruited to go to the Sudanese warzone to fight alongside the Sudanese RSF militia, a faction accused of horrific war crimes encompassing targeted ethnic killings and mass abductions.

Emergence of Involvement

The role of these mercenaries was first uncovered in 2024, after an inquiry which found that over three hundred ex-military personnel had been contracted to engage in combat – an revelation that led to an rare mea culpa from officials in Bogotá.

Former Colombian military have widely regarded as among the world’s most sought-after mercenaries due to their vast combat experience resulting from years of internal conflict, training on advanced weaponry, and high-level combat training.

Reported Actions

In the Sudanese theater, the mercenaries have reportedly trained underage fighters, taught fighters to pilot drones, and fought directly on the frontlines. A mercenary previously stated that training children was "terrible and insane" but commented that "sadly, that is the nature of conflict".

Sanctioned Individuals

Among those targeted was a retired Colombian officer, a dual Colombian-Italian national and retired Colombian military officer operating from the United Arab Emirates. The Treasury alleged he played a central role in enlisting and transporting mercenaries to Sudan. His wife, Claudia Viviana Oliveros Forero, was penalized as well.

Also on the restricted list was Mateo Duque Botero, a dual national who officials alleged oversaw a company linked to handling funds and payroll for the scheme. "In 2024 and 2025, US-based firms associated with Duque conducted numerous wire transfers, totalling millions of US dollars," the government release noted.

Citizen of Colombia Mónica Muñoz Ucros was the final person to be penalized, with the entity she oversaw accused of wire transfers associated with Duque and his companies.

"The US once more urges foreign parties to cease providing funding and arms to the combatants," the Treasury stated.

Analyst Commentary

An expert, from a conflict think tank, called the sanctions as a "major" development, saying that "targeting the enablers is the correct approach".

She added that, Colombia ratified a piece of legislation approving the International Convention Against the Recruitment and Use of Mercenaries, seeking to reduce years of participation by its nationals in foreign conflicts and reshape its security approach.

A mercenary specialist, a authority on private military contractors, urged more caution, noting that "sanctions are necessary but insufficient for combating the growing mercenary trade".

"It’s an illicit economy and operating from the Emirates, which is largely insulated from sanctions," he said. The Emirati government has been widely accused of supplying weapons to the paramilitary group, claims it rejects. "More contractors from Colombia are likely," McFate warned.