Global Witness published a one-year investigation today on the international journey of conflict coltan from the DRC to global electronics supply chains. The single most concrete finding is empirical and immediate: of the eight tantalum smelters processing coltan exported from Rwanda between January 2023 and September 2025, six are located in China, one in Kazakhstan, and one in Thailand. This is the most precise documentation we have seen of the processing concentration that Gracelin Baskaran’s CSIS commentary identified last week as a core architecture-closure challenge.
Three observations.
First. The US-DRC Article XV traceability question is now publicly answered, and the answer is uncomfortable. The investigation documents that ITSCI, the dominant traceability scheme in Rwanda, has been used to launder smuggled DRC coltan as Rwandan-origin material. Better Mining, the alternative scheme, has accepted operators previously excluded from ITSCI. The Responsible Minerals Initiative audits, which the EU recognized in October 2025 as compliant under its conflict minerals regulation, did not identify conflict coltan in the smelter supply chains. For the US-DRC SPA Article XV traceability obligations under SAR designations, the certification infrastructure that the framework presumes to be reliable is documented to be insufficient. Operators positioning for SAR designation under Articles IV, VII, and VIII inherit the certification framework gap as a direct compliance question.
Second. The conflict economy is the upstream half of the architecture-closure challenge. While Washington and allied capitals debate registry architecture, allied early action mechanisms, and rapid-response financing for asset acquisition, the M23-controlled Rubaya mines have generated approximately 800,000 dollars per month for the armed group through coltan taxation since May 2024. Rwanda’s coltan exports have multiplied by 2.5 between 2021 and 2025. The institutional reforms in DRC tracked through the Article XII reform clock and the IGF deployment of 4 June address fiscal mobilization at the central state level, but they operate downstream of an upstream production pipeline that armed groups effectively control at the orebody. Architecture-closure is not only about deal speed. It is about the entire vertical from extraction through processing to consumption.
Third. The EU strategic partnership with Rwanda on critical raw materials is now formally recommended for cancellation by Global Witness. Whether the EU responds is the policy question of the next two quarters. If it does, the multi-actor geopolitical mapping of DRC critical minerals shifts. If it does not, the contradiction between EU due diligence regulation and EU bilateral resource partnership widens. The US response, raised by Global Witness as a recommendation to strengthen Section 1502 of Dodd-Frank, is the parallel test for Washington.
For SAR-aligned operators sourcing tantalum-bearing components, the immediate due diligence challenge is concrete. Existing certification frameworks are publicly identified as insufficient. The downstream brand names appearing in the investigation include Microsoft, Vodafone, Sony, Amazon, Nvidia, LG Display, Ericsson, Toyota, Apple, Honda, Samsung, and Panasonic. The supply chain mapping that our practice conducts from the pit to the turbine increasingly intersects with conflict economy concerns that no certification framework currently resolves.
The architecture-closure challenge now has a tantalum chapter. Six of eight smelters in China are not included in the processing statistic. It is a measurable Western disadvantage at the segment of the supply chain where traceability ends, and consumption begins, on a value chain whose orebody is partially controlled by an armed group operating under documented external state support.
Confidence on Global Witness empirical findings: HIGH (one-year methodology, UN expert panel corroboration, customs data cross-referenced).
Confidence on EU policy response within the next two quarters: MEDIUM pending observation.
Confidence on Section 1502 strengthening: LOW under current policy direction.
Washington. Paris. Kinshasa.