Commander Robert Green (Royal Navy, Ret.) delivers the 2011 Frank K. Kelly Lecture on Humanity's Future. Commander Green is the author of a recent book entitled "Security Without Nuclear Deterrence." As a bombardier-navigator in the British Royal Navy, Green was involved in many flights with nuclear weapons on board. After thinking critically about the human and environmental consequences of using such weapons, he began developing his philosophy of national security without reliance on nuclear weapons.

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