OLDWICK, N.J.–(BUSINESS WIRE)–A.M. Best has placed under review with developing implications the Financial Strength Rating (FSR) of A- (Excellent) and the Long-Term Issuer Credit Rating of “a-” of the Western Life Assurance Company (Western Life) (High River, AB, Canada). This rating action follows The Wawanesa Mutual Insurance Company’s (Wawanesa Mutual) announcement that its subsidiary, Trimont Financial Ltd., has agreed to purchase Western Financial Group and Western Life from Desjardins F