In 1964, pre-historic remains were discovered at Jabal Aṣ-Ṣaḥābah - or Mountain of the Companions - in the Nile Valley near what is now the border of northern Sudan and Egypt. That site contained evidence of the earliest known warfare believed to have taken place around 13,500 years ago. It’s thought that climate change led to that conflict; as crop yields became smaller, more groups had to compete with each other for what food sources were available.

Spears and possibly arrows were the high-tech weapons of choice in the Nile Valley. Flash forward to today and it’s AI-enabled drones that have been - literally - levelling the playing field for Ukraine in their battle against Russia.

But as technological advancement continues apace what lessons have we learned from recent conflicts and how might things change in the wars yet to begin?

Guests: Shashank Joshi, defence editor at The Economist, Dr Jack Watling, Senior Research Fellow for Land Warfare at the Royal United Services Institute Dr Emma Salisbury, associate fellow in military innovation at the Council on Geostrategy

Production team: Ben Carter and Kirsteen Knight Editor: Richard Vadon Production Co-ordinator: Gemma Ashman Sound engineer: Neil Churchill

Part 1 Anonymous Questions | Why Do Christian's Still Sin? | Nathan Griffith & Charissa Mrowka