This episode forms part of a new strand of our podcast: Seapower Past and Present which explores seapower as it is understood and practised in the modern world whilst offering a historical perspective on the themes we explore. Each episode is chosen according to a theme or a location – a hotspot in the modern world where seapower has a major influence on geopolitics. So if you enjoy this episode do please seek out others in this strand – you will shortly be able to find episodes on economic warfare, critical national infrastructure, how technology is changing the nature of warfare at sea; and on hugely significant locations in the modern maritime world - the Black Sea, South China Sea, Middle East and Arctic.

To make this series come alive we’ve teamed up with the Royal Navy Strategic Studies centre. In each episode you will hear from at least one historian and from at least one practitioner, a member of the armed forces who has direct first hand, personal experience of the topic being discussed.

This episode explores how and why maritime infrastructure is critical to our lives as we live them today. To find out more Dr Sam Willis spoke with Tim Edmunds, Professor of International Security at the university of Bristol and an advisor for the UK's National Strategy for Maritime Security, and Erin Bisset, infrastructure Superintendent at the Royal Naval Base in Portsmouth.

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