From the former director of GCHQ, learn the methodology used by British intelligence agencies to reach judgements, establish the right level of confidence and act decisively.

Full of revealing examples from a storied career, including key briefings with Prime Ministers and strategies used in conflicts from the Cold War to the present, in How Spies Think Professor Sir David Omand arms us with the tools to sort fact from fiction.

And shows us how to use real intelligence every day.

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''One of the best books ever written about intelligence analysis and its long-term lessons'' Christopher Andrew, The Defence of the Realm: The Authorized History of MI5

''An invaluable guide to avoiding self-deception and fake news'' Melanie Phillips, The Times

WINNER OF THE NEAVE BOOK PRIZE 2022

LONGLISTED FOR THE ORWELL PRIZE FOR POLITICAL WRITING 2021