The UK has moved to expand its nuclear weapon stockpile up to 260 warheads, in a major reversal of a decade-long effort begun by the then coalition government to reduce the nuclear ceiling from 225 to 180 weapons.
Announced on 16 March in the first part of the long-awaited Integrated Review (IR), the reasoning behind the decision spoke of a ‘recognition of an evolving security environment’ and, in particular, the ‘developing range of technological and doctrinal threats'.
The warheads, known to be capable of producing a 100-kiloton explosion, are mounted on Trident II D5 ballistic missiles housed in the current