Former MI6 Chief: UK “Infantilised” By US Security Guarantee | The Economist

The Economist
The EconomistMar 25, 2026

Why It Matters

Reasserting British hard‑power reshapes NATO’s burden‑sharing and safeguards the UK’s strategic autonomy in an increasingly uncertain global security environment.

Key Takeaways

  • UK relies heavily on US security guarantee, feels infantilized.
  • Former MI6 chief urges Britain to rebuild independent hard‑power capacity.
  • Strengthening UK defense may improve, not diminish, US alliance.
  • Transitioning intelligence capabilities will be costly and operationally complex.
  • Europe’s security future hinges on Britain regaining autonomous deterrence.

Summary

The former head of MI6 argues that Britain has become "infantilised" by decades of a generous U.S. security guarantee, effectively outsourcing its core governmental duty of national defense. He warns that this dependence erodes sovereign decision‑making and leaves the UK vulnerable to shifting American priorities.

He calls for a rapid rebuilding of hard‑power capabilities—military, intelligence, and cyber—asserting that a more self‑reliant Britain would actually strengthen, not weaken, the transatlantic partnership. The chief stresses that the transition will be expensive and technically demanding, especially in intelligence where hedging against U.S. reliance is complex.

Key remarks include his insistence that the UK must remain "useful" to the United States, noting that the alliance is predicated on mutual benefit, not unconditional support. He also links the discussion to the broader European context, suggesting that a revitalized British defence posture could serve as a catalyst for Europe’s own security renaissance.

If Britain succeeds in regaining autonomous deterrence, it could rebalance NATO dynamics, compel the U.S. to engage as an equal partner, and provide Europe with a more credible counterweight to Russian aggression and other emerging threats.

Original Description

The Iran war has dealt another blow to the transatlantic alliance. But Sir Alex Younger, the former chief of MI6, sees a unique opportunity. He tells The Economist’s defence editor, Shashank Joshi, that the UK has been “infantilised” by the US security guarantee and that it must use this moment to reassess its relationship with hard power.
#uk #usa #politics #iran
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