Washington - The White House revealed last night that President Bush has hired a former US Attorney-General, Griffin Bell, to help him defend himself in the investigation into the Iran-Contra scandal, writes David Usborne. The latest twist comes one week after Mr Bush granted the former defense secretary, Caspar Weinberger, and five others pardons for their roles in the affair. The move infuriated the special counsel in charge of the investigation, Lawrence Walsh, who subsequently indicated that the President would be a 'subject' in further inquiries. The statement said Mr Griffin would help Mr Bush retrieve a deposition he made in 1988 outlining his position on the affair, which Mr Walsh has in his possession but has declined to give back to the White House. He would also be responsible for advising Mr Bush on responding to any allegations that may arise after 20 January when he will cease to be President.