Lord Browne said the inquiry could accelerate the proliferation of nuclear weapons.
It follows the Labour peer's call earlier this week for the UK to scrap the policy which keeps its nuclear deterrent at sea 24 hours a day.
A former defence secretary has warned the UK Government's Trident review risks showing other countries how to create their own nuclear weapons system "on the cheap".
Lord Browne said the inquiry could accelerate the proliferation of nuclear weapons.
It follows the Labour peer's call earlier this week for the UK to scrap the policy which keeps its nuclear deterrent at sea 24 hours a day.
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