AM Best affirmed and withdrew NEWGT Reinsurance Company’s A- and “a-” ratings after the company requested to leave its rating process. The ratings agency said, “AM Best has affirmed the Financial Strength Rating of A- [Excellent] and the Long-Term Issuer Credit Rating of “a-” [Excellent] of NEWGT Reinsurance Company, Ltd. [NEWGT] [Bermuda]. The outlook of …