Too Big to Fail: The Inside Story of How Wall Street and Washington Fought to Save the Financial System from Crisis — and Themselves

by Andrew Ross Sorkin

As Paulson and Bernanke both knew, AIG had effectively become a linchpin of the global financial system. Under European banking regulations, financial institutions had been allowed to meet capital requirements by entering into credit default swap agreements with AIG’s financial products unit. Using the swaps, the banks had essentially wrapped AIG’s triple-A credit rating around riskier assets, such as corporate loans and residential mortgages, allowing the banks to take on more leverage. If AIG were to fail, however, those protective wrappers would vanish, forcing the banks to mark down assets and raise billions of dollars—a frightening prospect in the current markets. And the numbers were staggering: Halfway though 2008, AIG had reported more than $300 billion in credit default swaps involved in this wrapping procedure, which it politely called “regulatory capital relief.”