OLDWICK, N.J.–(BUSINESS WIRE)–A.M. Best has affirmed the Financial Strength Rating of A+ (Superior) and the Long-Term Issuer Credit Ratings (Long-Term ICR) of “aa-” of RGA Reinsurance Company (Chesterfield, MO), RGA Americas Reinsurance Company, Ltd (Bermuda) and its subsidiaries, RGA Life Reinsurance Company of Canada (Toronto, Canada) and RGA Atlantic Reinsurance Company Ltd. (Barbados), collectively referred to as RGA Re. A.M. Best also has affirmed the Long-Term ICR of “a-” and all Long-T