General Sir Patrick Sanders has a stark warning: Britain must prepare for war with Russia within five years and start building bunkers and better air defences.

Speaking exclusively to our Defence Editor Danielle Sheridan, the former head of the British army points to the Nordic countries and says we need to start taking a leaf out of their book.

He also discusses why an Iron Dome couldn’t work in the UK, his thoughts on the recent Israel-Iran war, and why he didn’t encourage his son to join the army.

General Sanders stood down as head of the British army last summer. The former rifleman had been tipped to be the next Chief of the Defence Staff but fell out of favour with the Government for being too outspoken about the extent of troop cuts.

Our defence editor Danielle interviewed him in his garden at his home in rural Wiltshire, with his blonde Labrador Fargo by his side.