I am delighted to introduce Britain’s world: The strategy of security in twelve geopolitical maps, a new geopolitical atlas designed to complement the 2025 National Security Strategy and the Strategic Defence Review. Co-edited with Andrew Young, hard copies of Britain’s world were launched at the International Sea Power Conference 2025, hosted by the Council on Geostrategy on behalf of Gen. Gwyn Jenkins, First Sea Lord, on 8th December 2025. I would like to thank the First Sea Lord for kindly agreeing to provide a foreword for the atlas.