CHINA CLAIMS FUSION BREAKTHROUGH.

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Beijing announced the successful activation of what it called a "commercially viable" fusion reactor at a remote facility in Qinghai Province, a claim that, if verified, would represent a stunning leap past Western research programs.

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Satellite imagery appears to confirm that the facility is connected to the regional power grid and that construction of additional transmission infrastructure is underway.

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The White House declined to comment, but congressional leaders were quick to respond, with Senator Hargrove calling for an emergency intelligence briefing.