BNP Paribas entered a guilty plea and agreed to pay nearly $9 billion in penalties on Monday for knowingly violating sanctions against four nations despite previous warnings from U.S. officials. From 2004 to 2012, BNP, France's largest bank, conspired to move more than $8.9 billion through the U.S. on behalf of individuals and corporations included on the Treasury Department's list of specially designated nationals. The bank obscured the involvement of blacklisted parties in the transactions by omitting information that would identify them from the payment instructions attached to them. In a statement, the Federal Reserve said it had barred BNP...