(Bloomberg) -- An ESG strategy that’s too controversial for US regulators and some major ratings companies has been embraced by Fidelity International and other European financial firms as a way to safeguard long-term returns.Most Read from BloombergHere’s How Weird Things Are Getting in the Housing MarketIntel Is Planning Thousands of Job Cuts in Face of PC SlumpHome Flippers Get Burned by US Housing Market’s Sudden SlumpJamie Dimon’s S&P 500 Bear Market: Brutal, Far From Unimaginable Ukraine L