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NATO warns Putin over Russian submarine missions

NATO has issued a warning to Russia over reported secret submarine missions. The supplied headline does not specify the missions’ location, purpose or any confirmed incident.

By DoomRadar · Published on DoomRadar .

Why it matters

Covert activity involving Russian submarines could increase tensions around critical undersea infrastructure and military deterrence.

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  1. NATO issues chilling 3-word warning to Putin over Russia's secret submarine missions | World | News ↗express.co.uk · Recorded source date: Sep 3, 2026, 10:46 AM UTC

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