Of course, like any shrewd politician, Thatcher knew which battles were unwinnable, or had to be postponed; but she always preferred winning a fight to reaching a compromise. She won the sobriquet “Iron Lady” for her decisive leadership in the Falklands War; yet most of her battles were fought against sections of her own people – the “enemy within,” like the miners whom she crushed in the strike of 1984-1985, or Ken Livingstone’s Greater London Council, which she abolished in 1986.