A group of Credit Suisse bondholders filed a lawsuit against the Swiss government, seeking full compensation over the contentious decision to write down the failed bank's Additional Tier 1 (AT1) debt.As part of Credit Suisse's emergency sale to UBS last year, which was orchestrated by the Swiss government, Swiss regulator Finma wiped out roughly $17 billion of the bank's AT1s, writing them down to to zero.The bank's common shareholders received payouts when the sale was completed.The move angered bondholder ...