Day 187.Due to it being a Bank Holiday in the UK, our Defence and Security Editor Dominic Nicholls presents a special programme looking back on his time with the British Royal Navy and the Ukrainian Navy, and their use of autonomous mine-hunting drones. Contributors:Dom Nicholls (Defence & Security Editor). Follow Dom on Twitter @DomNicholls.Email: podcasts@telegraph.co.ukSee Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.