Britain’s Queen Elizabeth will observe her diamond jubilee next month. It’s been sixty years since her father, George the Sixth, died. Elizabeth Alexandra Mary became head of the Commonwealth at age twenty five. During her reign – the longest since Queen Victoria’s – she’s ushered the British monarchy into the modern age. The young princess who never expected to become queen has evolved from working mother to wise grandmother during her reign. Despite heading a sometimes flawed family, Elizabeth’s popularity has survived — even thrived — in recent years. Diane and her guest discuss the life of Britain’s Elizabeth II and the modern monarchy.