The US government has enforced penalties on a group of several persons and entities accused of recruiting South American contractors to support and educate a Sudanese paramilitary group which the US alleges of committing genocide.
Revealing the restrictions on Tuesday, the US Treasury Department stated the operation was largely composed of Colombian nationals and companies.
Scores of former Colombian military personnel have allegedly journeyed to Sudan to operate with the RSF paramilitary group, a force linked to terrible atrocities including targeted ethnic killings and mass abductions.
The participation of ex-soldiers initially emerged last year, after an investigation which found that hundreds of ex-military personnel had been hired to participate in the war – an discovery that led to an rare mea culpa from Colombia’s foreign ministry.
These South American veterans have long been considered as among the world’s most sought-after mercenaries due to their considerable warzone knowledge resulting from years of internal conflict, training on advanced weaponry, and elite military instruction.
In the Sudanese theater, the mercenaries have been accused of teaching child soldiers, instructed militiamen in drone operation, and engaged in frontline combat. A mercenary remarked that instructing minors was "horrific and irrational" but added that "sadly, that is the nature of conflict".
Among those penalized was a retired Colombian officer, a dual Colombian-Italian national and ex-soldier based in the UAE. The government said he had a central role in enlisting and transporting ex-military personnel to Sudan. His spouse, Claudia Oliveros, was penalized as well.
Also on the restricted list was Mateo Duque Botero, a individual with Colombian and Spanish citizenship who the Treasury stated managed a business implicated in handling funds and payroll for the scheme. "In 2024 and 2025, US-based firms connected to Duque engaged in several money transfers, worth millions," the Treasury statement said.
Individual Mónica Muñoz Ucros was the final person to be penalized, with the company she managed said to have conducted money transfers connected to Duque and his businesses.
"The United States again calls on outside forces to stop giving funding and arms to the belligerents," the Treasury stated.
An expert, with the International Crisis Group, described the sanctions as a "very significant" step, stating that "targeting the enablers is the correct approach".
It was also noted that, the Colombian government recently passed a law ratifying the anti-mercenary convention, aiming to curb years of participation by its nationals in foreign conflicts and reshape domestic defense strategy.
Sean McFate, a scholar on the subject, advised additional measures, noting that "sanctions are necessary but insufficient for dealing with rampant mercenarism".
"It operates in the black market and centered in the Emirates, which is relatively sanction-proof," he commented. The United Arab Emirates has been frequently alleged of arming the RSF, allegations it disputes. "More contractors from Colombia are likely," McFate warned.
Lena Visser is techjournalist met focus op startups en digitale transformatie in Eindhoven.