Exclusive: Jock Stirrup, the former chief of defence staff under Tony Blair, tells the prime minister: ‘We expect our leaders to lead and that means making tough decisions’ Sign up to our free Brexit newsletter for our analysis of the continuing impact of Brexit on the UK Sign up to our free newsletter for the latest analysis on Brexit's impact Sign up to our free newsletter for the latest analysis on Brexit's impact Email * SIGN UP I would like to be emailed about offers, events and updates