LONDON--(BUSINESS WIRE)--A.M. Best has assigned a financial strength rating of A- (Excellent) and an issuer credit rating of “a-” to UnipolRe Limited (UnipolRe) (Ireland), a wholly owned subsidiary of UnipolSai Assicurazioni S.p.A. (UnipolSai) (Italy). The outlook assigned to both ratings is stable. The assignment of the ratings to UnipolRe follows the decision by the directors of UnipolSai and UnipolRe to change UnipolRe’s business operations from a group reinsurance captive to a third-party r