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Speaking to TalkRADIO, Professor Prins claimed Theresa May's Brexit withdrawal agreement was accompanied by a deal with the EU over the future security and defence relationship with the Brussels bloc that gave away the UK's intelligence provided by the Five Eyes Alliance. The Professor claimed the Government had allowed the EU27 to pass laws over the last two years that would strengthen the bloc's defence identity only to go back on its position and agree to be part of that identity post-Brexit.

He said: “The people voted on the 23rd of June 2016 to leave the EU. “They didn’t vote, as we all know, for a negotiation of this order. They voted to leave. “And that means a sovereign Brexit which is the correct name for it rather than no deal Brexit. “And, of course, that will produce tangible benefits in many areas.

Brexit news: Theresa May made 'fatal security concession' to EU claims former MOD advisor

The Government has embedded a fatal concession within its total withdrawal strategy on defence Professor Gwythian Prins

“But what we have done this morning is to publish a draft treaty on defence and security and intelligence that we should sign with the EU after we leave on the 29th March. “The reason we’ve done this is because the public is simply not aware that the Government has embedded what we regard professionally as a fatal concession within its total withdrawal strategy on defence and security. “Because it is offering up, effectively, the crown jewels of our national security which is our intelligence alliance with the United States and with who is called the Five Eyes Alliance - that is with the anglo-sphere countries Australia, Canada, New Zealand, United States and us - who do the primary analysis on intelligence which keeps the west safe.” It comes as the European Union has threatened to cut Britain out of the Galileo satellite programme despite a £1billion financial contribution to the project.