Gold ended higher Wednesday, buoyed by U.S. political uncertainty fueled by Donald Trump Jr.'s release of email exchanges linked to a meeting with a Russian lawyer last year. Investors also digested Congressional testimony from Federal Reserve Chairwoman Janet Yellen, who reiterated the central bank's "gradual" approach to raising interest rates. August gold rose $4.40, or 0.4%, to settle at $1,219.10 an ounce.
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