Rubio warns against overreliance on single sources, flags undersea cable security

Oct 8, 2026

In Lisbon, Secretary Rubio urged diversification of supply chains and raised security concerns about undersea cables and critical technologies, telling reporters that dependence on a single country for vital supplies is risky.

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When asked whether the United States had pressed Portugal or EU partners to reduce dependence on China in strategic sectors, Secretary Marco Rubio framed the concern as a question of diversification and security. "We think it's not good for us, for Portugal, for any country in the world to to depend on any country for 95% of anything," he said, urging a broader set of sources for pharmaceuticals, critical minerals and technologies.

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