The US government has imposed sanctions on a group of several persons and entities alleged of hiring South American contractors to fight for and train a Sudanese paramilitary group the United States claims of acts of genocide.
Disclosing the sanctions on Tuesday, the US Treasury Department stated the operation was mostly comprised of Colombian nationals and companies.
Scores of ex-soldiers from Colombia have reportedly travelled to the conflict in Sudan to operate with the Sudanese RSF militia, a group accused of terrible atrocities including ethnically targeted slaughter and widespread kidnappings.
The role of these mercenaries was first uncovered the previous year, prompted by an report which found that hundreds of retired troops had been hired to engage in combat – an revelation that resulted in an unusual statement of regret from the Colombian government.
Former Colombian military have widely regarded as among the world’s most sought-after mercenaries due to their vast combat experience resulting from a long-running domestic war, knowledge of advanced weaponry, and superior tactical education.
In the Sudanese theater, the contractors have reportedly trained child soldiers, provided drone warfare training, and fought directly on the frontlines. A mercenary previously stated that instructing minors was "horrific and irrational" but commented that "unfortunately that’s how war is".
Among those penalized was Álvaro Andrés Quijano Becerra, a citizen of both Colombia and Italy and retired Colombian military officer operating from the UAE. The US authorities said he had a central role in recruiting and deploying ex-military personnel to Sudan. His wife, Claudia Oliveros, was also sanctioned.
Also on the restricted list was Mateo Duque Botero, a individual with Colombian and Spanish citizenship who officials alleged oversaw a company linked to managing finances and payments for the network. "Over the past two years, companies in the United States connected to Duque conducted numerous wire transfers, worth millions," the government release noted.
Individual Mónica Muñoz was the final person to be sanctioned, with the entity she oversaw accused of financial transactions connected to Duque and his businesses.
"The US once more urges outside forces to stop giving monetary and weaponry aid to the belligerents," the Treasury stated.
A senior analyst, senior analyst at the International Crisis Group, described the measures as a "highly important" development, stating that "targeting the enablers is the right way to go".
Furthermore, Colombia recently passed a law approving the anti-mercenary convention, aiming to curb its citizens' long history in overseas wars and reshape domestic defense strategy.
Another expert, an expert on mercenaries, advised additional measures, stating that "penalties are required yet incomplete for dealing with the growing mercenary trade".
"This is a shadow economy and centered in the Emirates, which is relatively sanction-proof," he stated. The Emirati government has been frequently alleged of providing arms to the militia, an accusation it has denied. "More contractors from Colombia are likely," the expert cautioned.
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Andrew Ruiz
| 05 Sep 2026
Andrew Ruiz
| 05 Sep 2026