What’s behind the EU’s vaccine flip flop?

Ursula von der Leyen today said that the EU could block vaccine shipments to the UK if it doesn't export AstraZeneca jabs to the bloc. The Commission's head is under pressure to fix a rollout programme that continues to flounder - just 12 per cent of EU citizens have received a dose compared to 39 per cent in the UK. But why does the continent want vaccines it won't approve? Katy Balls speaks to Fraser Nelson and James Forsyth.