OLDWICK, N.J.–(BUSINESS WIRE)–A.M. Best has revised the outlook to positive from stable for the Long-Term Issuer Credit Ratings (Long-Term ICR) and affirmed the Financial Strength Rating (FSR) of A (Excellent) and the Long-Term ICRs of “a” of the property/casualty (P/C) subsidiaries of CNA Financial Corporation (CNAF) [NYSE: CNA], collectively known as CNA Insurance Companies (CNA). Concurrently, A.M. Best has revised the outlook to positive from stable and affirmed the Long-Term ICR of “bbb”