“In a few seconds, Sanford Weill disavowed the work of a lifetime. Mr. Weill, who built Citigroup Inc. through repeated acquisitions–including the 1998 megadeal that prompted Congress to strike down a six-decade-old ban on commercial banks doing investment banking, and vice versa–on Wednesday called for the breakup of huge U.S. financial conglomerates. ‘I am suggesting that they be broken up so that the taxpayer will never be at risk, the depositors won’t be at risk,’ Mr. Weill said in a TV interview on CNBC. ‘Mistakes were made,’ he added a few seconds later…It was as if Napoleon had called for an end to military conquest.”