Deutsche Bank has become the latest financial firm to settle accusations it rigged a key global interest rate used to set the value of trillions of dollars in investments. The bank agreed to pay $2.5 billion under the settlement with U.S. and British regulators, and accept a criminal guilty plea for a British subsidiary. No one at the bank has been charged with a crime. [So easy. Commit crime, then pay a small part of the gain as fine.]