Ursula von der Leyen came to the post of President of the European Commission five years ago with a less than glittering reputation. Martin Schulz, her compatriot and former President of the European Parliament, described her as the ‘weakest minister’ in Angela Merkel’s government. There was a strong sense that she had been booted upstairs after her failures as German defence minister, which included running down the armed forces to the point where some soldiers had to take part in a Nato exercise with broomsticks in place of guns.