As another key member of the British cabinet quits, the future of prime minister gordon brown looks increasingly uncertain

British Prime Minister Gordon Brown is moving to reshuffle his cabinet after the resignation of four ministers in the past three days. Earlier today, defence secretary John Hutton quit following the resignation of Work and Pensions Secretary James Purnell. But unlike Purnell, Hutton cited FAMILY REASONS for stepping down but said he still supports Brown's government. Meanwhile, the calls for Brown's resignation are growing louder, as his leadership ability is put into question.