The recent volatility in financial markets reinforces the need for the Federal Reserve to be patient with its policy stimulus and to clearly tie an eventual interest-rate rise to improving economic conditions, a top Fed policymaker told Reuters. Boston Fed President Eric Rosengren said that while it would take a few more weeks to understand the real economic fallout from the market selloff, he could “easily imagine” a scenario in which the U.S. “Patient monetary policy probably makes sense,” Rosengren, a dovish Fed official, said in an interview over the weekend. Rosengren predicted the U.S.