OLDWICK, N.J.–(BUSINESS WIRE)–A.M. Best has assigned a Long-Term Issue Credit Rating of “bbb” to the $500 million 3.450% senior unsecured notes, due Aug. 15, 2027, recently announced by CNA Financial Corporation (CNAF) (headquartered in Chicago, IL) [NYSE: CNA]. The outlook assigned to the Credit Rating (rating) is stable. The proceeds from the sale of the notes will be used to repay at maturity the $150 million outstanding aggregate principal balance of CNAF’s 6.950% senior notes due Jan. 15