Colombia's 'Duty to Protect' Becomes a Litigation Theory — and a $700m ICSID Docket

What happened

A US$700 million ICSID claim against Colombia — the largest in a growing queue of investor-state cases premised on the state's failure to protect licensed mining operations from illegal miners, violent strikers, and armed groups — has been updated and is now active before a constituted tribunal. The claim follows an earlier filing by a Chinese-owned Canadian company, Zijin Mining, which lodged its own ICSID claim after alleging that Colombian authorities had failed to shield its gold project and workers from coordinated attacks by illegal miners. A senior Zijin security official was reported to have acknowledged that the company was effectively losing ground to illegal-mining incursions at its Colombian site.

The institutional backdrop makes the timing significant. A 2025 environmental reserve formally bans extraction across some 75,000 hectares of the Santurban paramo in north-eastern Colombia, yet dozens of older mining titles remain inside the protected zone, and a court-ordered community-backed delimitation — mandated nine years ago — has still not been finalised. Meanwhile, a government investigation revealed that the Gulf Clan, Colombia's most significant organised-crime group, had been conducting illegal mining operations inside the perimeter of a Colombian military base, with the Army itself acknowledging the long-standing presence of illegal miners in the area. Gold illegally extracted has reportedly been channelled through fraudulent documentation and exported to the United States, entering official refining circuits. Illegal mining has become one of the primary revenue streams for armed groups in Colombia, with some financial-intelligence estimates placing it ahead of drug trafficking by profitability. Against that backdrop, the formal duty of a host state to maintain the security conditions necessary for a licensed investor to operate is the load-bearing question in all three pending proceedings.

The prior generation of this docket produced a telling procedural result: a Canadian mining company's ICSID claim — in which an ICSID tribunal had already rejected Colombia's preliminary jurisdictional objections — was ultimately settled, with Colombia itself describing the outcome as its first-ever settlement of an investment arbitration. The settlement withdrew the claim in exchange for commitments to negotiate a new operating framework, but no monetary figure was made public. That settlement has now been superseded by two larger, live proceedings, suggesting that the withdrawal of the first claim resolved a specific site dispute rather than the underlying structural question of state duty.

Why it matters for dispute formation

The Colombia cluster is the clearest current example of a doctrine that is migrating from outlier theory to mainstream treaty practice: that a host state's obligation of 'full protection and security' under a bilateral or multilateral investment treaty is not discharged by the mere existence of domestic security forces, but requires active and effective protection of a licensed investor's ability to operate. Tribunals have historically interpreted 'full protection and security' as a due-diligence standard rather than a strict-liability one — but as the quantum of claims escalates from US$250 million to US$700 million on materially similar facts, claimants are evidently testing whether a pattern of documented inaction, combined with evidence of state knowledge (such as military personnel co-located with illegal miners), can push the standard closer to a results obligation. The Zijin claim adds a further layer: the investor is a state-owned Chinese enterprise, and the bilateral investment architecture between China and Colombia means the applicable treaty's full-protection language and its fair-and-equitable treatment provisions will be interpreted against a different textual baseline than the Canada-Colombia FTA provisions that governed the Gran Colombia proceedings.

For general counsel assessing analogous exposures, the Colombia pattern maps directly onto a wider operational risk that is underweighted in most asset-level due diligence: the risk that a state's incapacity — rather than its hostility — toward a concession area will generate investable treaty claims. Colombia's acknowledgment of Gulf Clan operations inside a military perimeter is not an isolated data point; it is the kind of evidentiary foundation that a tribunal assessing full-protection-and-security claims will scrutinise when gauging whether the state met even the minimal due-diligence threshold. The Santurban boundary dispute compounds this, because every hectare whose regulatory status remains unresolved is a hectare on which the state cannot credibly claim it has discharged both its environmental-protection obligations and its investment-protection obligations simultaneously. That contradiction — enforcing a moratorium on the one hand while failing to control illegal extraction on the other — is precisely the regulatory incoherence that treaty tribunals have found most damaging to a respondent state's position on fair-and-equitable treatment.

The escalating quantum of claims also has a systemic implication for Colombia's sovereign risk profile. Investment treaty claims are not merely bilateral matters between an investor and a state; they are observable by rating agencies, multilateral lenders, and potential co-investors who are calibrating the risk-adjusted cost of future commitments. A state that has moved from settling one US$250 million claim to defending a US$700 million claim on substantively similar facts — without publicly resolving the underlying security governance question — signals to the market that the structural problem has not been addressed.

Who's exposed

What to watch

• Whether the US$700 million ICSID tribunal will address Colombia's 'full protection and security' obligation under a strict or a due-diligence standard — a jurisdictional and merits question that could set a binding precedent applicable across the region.
• The outcome of the Santurban paramo delimitation process: any final boundary that retroactively invalidates existing titles inside the zone could generate a separate wave of regulatory-taking claims on top of the existing illegal-mining protection claims.
• Colombia's domestic legislative response — specifically whether the Petro administration introduces a formal state-backed security protocol for licensed mining zones, which would simultaneously strengthen the state's treaty-compliance posture and implicitly acknowledge the prior shortfall.
• Whether the Zijin claim proceeds to a merits hearing or is settled bilaterally under the China-Colombia BIT framework, and whether any settlement involves equity restructuring, operational concessions, or monetary compensation — each outcome carrying different signalling value for other state-enterprise investors in the Andean region.