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Macron to Visit Top-Secret Sub Base as some Europeans Worry About US Nuclear Guarantees

Macron plans to clarify France's nuclear deterrence use and explore extending its protective umbrella to European allies amid rising Russian threats and U.S. reliability concerns.

  • On Monday, French President Emmanuel Macron will update thinking on warhead use at the Île Longue submarine base, home to France's four nuclear-armed submarines, marking his second deterrence keynote since 2017.
  • Amid shifts since 2020, the full-scale Russian invasion of Ukraine and doubts about U.S. President Donald Trump’s steadfastness have prompted a doctrinal update, Macron's `last shot` to extend France’s nuclear umbrella.
  • France's arsenal details show each submarine carries 16 M51 intercontinental ballistic missiles, France's stockpile includes fewer than 300 warheads, and Macron said it can inflict `absolutely unacceptable damage` while keeping doctrine ambiguous.
  • Seeking to reassure allies, European partners and allies engage France seeking a "second life insurance" amid U.S. doubts, with German Chancellor Friedrich Merz holding initial talks on nuclear cooperation.
  • Some European politicians now argue that Nordic countries have uranium and scientists but need time to develop weapons, so in the short term they look to France, while Rasmus Jarlov doubts Trump would risk U.S. cities for Europe.
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Macron to visit top-secret sub base as some Europeans worry about US nuclear guarantees

President Emmanuel Macron is updating France’s nuclear deterrence doctrine as Europe worries about Russia and doubts U.S. protection under Donald Trump.

·United States
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The French president, Emmanuel Macron, will present next Monday the evolution that he intends to give to the doctrine of nuclear deterrence and to his device, in a context determined above all by the "aggressiveness" of Russia and the difficulty of maintaining the international norms to avoid proliferation.The speech that he will give from the naval base of Ile Longe, in the extreme west of Brittany (northwest), will mark a line of continuity wi…

·Spain
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Le Télégramme broke the news in on Wednesday, February 25, 2026.
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