dossier". Publishing such an account would be unprecedented for a former Chief of the Secret Intelligence Service. He may release this now that the Chilcot Inquiry findings have been published in 2016. On 7 July 2014, in a lecture at the Royal United Services Institute, Dearlove argued that the government and media had exaggerated the Islamist terrorism threat to the UK, giving extremists publicity counter-productive to UK interests. In 2015, Dearlove retired as Master of Pembroke College. He is non-executive chairman of Crossword Cybersecurity plc. Political views On 16 May 2016, Dearlove gave a public lecture televised by the BBC on contemporary mass foreign migration and its effects upon the European continent. In its text he stated that the governments of Europe were facing a "sea change" in their politics, and if they did not get control and prevent ongoing mass migration of peoples from Africa and Asia into Europe they would find themselves "at the mercy of a populist uprising, ... which is already stirring," and that the oncoming 2016 United Kingdom European Union membership referendum was the first manifestation of it. He stated further that foreign mass migration's geopolitical impact upon Europe, if it was not prevented, was set to reshape its political landscape as those of its citizens who feel their interests are threatened asserted their influence. On 8 June 2017, Dearlove intervened on the day of the 2017 UK general election in The Daily Telegraph saying "how profoundly dangerous it would be for the nation if Jeremy Corbyn becomes Prime Minister." On 29 November 2018 Dearlove co-signed an open letter, published in a British national newspaper, condemning Prime Minister Theresa May's negotiated Brexit withdrawal agreement after the 2016 Referendum on the issue, as the matter was passing through the House of Commons to be voted upon. In its text he stated that the Withdrawal Agreement as negotiated undermined MI6's nationally independent global intelligence power. In a published response, dated the same day, May's office issued a public rebuttal to the letter's content, singling out Dearlove personally from the named list of several signatories to the open letter, and stating that the Withdrawal Agreement "absolutely does not" compromise the national independence of the UK's intelligence capacity. In early December 2018 Dearlove, in a jointly authored text with Major-General Julian Thompson, published on the website 'Briefings for Brexit' an extensive reply to May's statement entitled 'The Prime Minister