The defence secretary John Healey sends a message to Russia’s President Putin warning him we will not shy away from robust action to protect this country. It’s after a Russian spy ship is spotted for a second time in UK waters. On Sitrep, we discuss the creeping threat of hybrid warfare.

Why is the US preparing for potential conflict with China by 2027? Professor of War & Strategy in East Asia, Alessio Patalano, who’s also a visiting fellow at the Royal Navy Centre for Strategic Studies, explains the significance of the date.

And it’s a highbrow, high-tech chance to hear about the latest developments in the machinery of war.  Sitrep’s Claire Sadler has been at the International Armoured Vehicles conference for Sitrep.