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The United States has imposed sanctions on a operation of four individuals and four companies accused of enlisting former Colombian soldiers to fight for and train a Sudanese paramilitary group which the US alleges of committing genocide.

Operation Structure

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

Scores of former Colombian military personnel have been recruited to go to Sudan to combat beside the Rapid Support Forces (RSF), a force accused of terrible atrocities encompassing ethnically targeted slaughter and large-scale abductions.

Revelation of Role

The role of these mercenaries was first uncovered in 2024, prompted by an investigation which disclosed that hundreds of retired troops had been hired to participate in the war – an revelation that resulted in an rare mea culpa from the Colombian government.

Colombian ex-soldiers have historically been seen as some of the most in-demand contractors globally due to their extensive battlefield experience resulting from years of internal conflict, knowledge of Western military gear, and superior tactical education.

Role in the Conflict

In the conflict, the mercenaries have allegedly instructed child soldiers, instructed militiamen in drone operation, and participated in direct battles. An individual involved previously stated that training children was "horrific and irrational" but added that "regrettably, war operates that way".

Targeted Persons

Among those penalized was a retired Colombian officer, a citizen of both Colombia and Italy and former army officer operating from the UAE. The US authorities accused him a pivotal function in enlisting and transporting ex-military personnel to Sudan. His spouse, Claudia Oliveros, was similarly targeted.

Also on the penalty list was Mateo Duque Botero, a dual Colombian-Spanish citizen who authorities say managed a business implicated in handling funds and payroll for the network. "In 2024 and 2025, companies in the United States connected to Duque engaged in several money transfers, worth millions," the official announcement stated.

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

"The US once more urges external actors to halt the flow of financial and military support to the belligerents," the department said in a statement.

Analyst Commentary

An expert, senior analyst at the International Crisis Group, labeled the actions as a "highly important" development, noting that "targeting the enablers is the proper strategy".

She added that, Bogotá recently passed a statute ratifying the anti-mercenary convention, designed to limit decades of Colombian involvement in foreign conflicts and transform domestic defense strategy.

Sean McFate, a authority on private military contractors, advised additional measures, saying that "penalties are required yet incomplete for combating widespread use of contractors".

"It operates in the black market and operating from the UAE, which is largely insulated from sanctions," he stated. The Emirati government has been frequently alleged of arming the RSF, allegations it disputes. "Expect more Colombian mercenaries," McFate warned.