Vince Cable: 'Prince David went into battle and he lost'

In the first of a BBC Newsnight series, Political Bedtime Stories, the Lib Dems' Vince Cable tells the tale of a prince called David who went into battle - and lost.

Good politicians need to be good storytellers. So BBC Newsnight has asked some senior politicians to tell a story. It can be true or false, abstract or literal, personal or political. This is the first in the series which will feature stories from across the political spectrum.