Professor Malcolm Chalmers, Deputy Director-General of the UK’s Royal United Services Institute (RUSI) has argued that the British public’s decision to leave the European Union would necessitate a significant a shift in UK national strategy and has called for a new Strategic Defence and Security Review (SDSR).
In November 2015 the British government published its latest SDSR, setting out its national security strategy and announcing key decisions on strategic and spending priorities. Because of the political sensitivity of the subject, and the prime minister’s then-ongoing negotiations on EU reforms, it did not assess the defense and security implications of a UK exit from the EU.