Behind the handshakes of leading politicians, beyond the trade deals and hidden beneath mutually beneficial military deals, how has the 'special relationship' between the United States and the United Kingdom extended to intelligence and covert operations?
Don is joined by Michael Smith, who has drawn on his own service in the British Army's Intelligence Corps to explore how the intelligence agencies of the US and the UK have worked together - or not - since the Second World War.
Produced by Sophie Gee. Edited by Ella Blaxill. Senior Producer was Charlotte Long.