Bank of America Corp., after vowing to fight requests that it repurchase certain loans, has begun potential settlement discussions with some of its largest mortgage investors. The 17-member group now in talks with the nation's largest bank as measured by assets includes the Federal Reserve Bank of New York, government-owned mortgage company Freddie Mac, BlackRock Inc., and Allianz SE's Pacific Investment Management Co., or Pimco. The bank's approach with this group appears to signal a change in tone for Chief Executive Brian Moynihan, who in November pledged to engage in "day-to-day, hand-to-hand combat" on investor requests to repurchase flawed mortgages...