Part One: Ahead of the British elections on 6 May, senior former military leaders give their assessment of the issues facing defence and security.
General Sir Mike Jackson, Air Chief Marshal Sir Brian Burridge and Rear Admiral Chris Parry take part in the interview.
Watch all the interviews here on YouTube
What will Britain's role be in future conflict?
Can Britain continue to stay Afghanistan?
Is there a public appetite for defence?
What should our spending priorities be on defence?