Nuclear weapons and the ‘Letter of last resort’: what my students think

By Jez Littlewood

NPSIA’s disarmament, arms control and non-proliferation course began last week (INAF 5201). Once the administrative side of the first class was completed I began the class with the 2015 Bulletin of the Atomic Scientists What would happen if an 800-kiloton nuclear warhead detonated above midtown Manhattan? However, to inject some additional reality into the subject each was tasked with deciding on how the UK would respond to a nuclear attack.

The scenario was simple: each was to assume they had been elected (or appointed) Prime Minister of the United Kingdom and each had to decide the nuclear response in the event of a surprise attack. Pre-reading included Richard Norton-Taylor’s story in The Guardian from July 2016 – Theresa May’s first job: decide on UK’s nuclear response. Thus, sixty minutes after arriving in class task one for my 21 students was the drafting of what is generally known as “the letter of last resort”.

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