(Kitco News) - The U.S. dollar is in a long-term uptrend and the consequences of that mean commodities and countries whose economies depend heavily on commodity production will suffer, said a director of market strategy at a financial services group.

NEW YORK, May 22 (Reuters) - The dollar rallied to a 4-1/2-year high against the yen and a near three-year peak against a currency basket on Wednesday after Federal Reserve Chairman Ben Bernanke stoked speculation the U.S. central bank could begin ...

"Investors had been gradually increasing their exposure to (US) dollars since the beginning of the month and when they de-levered, they sold the greenback," she said from New York.

Gold Silver GLD IAU SLV A sharp drop in Asian stock markets pushed global equities lower and refreshed investor appetite for gold.

The dollar started higher in early trade on the growing view that the U.S. Federal Reserve is leaning toward winding down its monetary-easing program.

TAIPEI--Taiwan's central bank Thursday lowered the daily ceiling for onshore banks in unwinding their outstanding long U.S. dollar positions, a move aimed at reducing the volatility in the local currency. An official from the central bank's foreign ...

FXstreet.com (Barcelona) - The greenback, in terms of the US Dollar index, is prolonging its intraday decline on Thursday, falling to the current 83.75/80 region after overnight highs around 84.60.

KINGSTON, Jamaica - The Jamaican dollar lost against both its North American counterparts at the end of trading today. The US dollar traded for an average J$99.11, up seven cents from yesterday while the Canadian dollar went for J$97.37, a 30-cent gain.

Video summary: The US Dollar continues to surge, but we look at key reasons why the Greenback could hit even higher highs--particularly versus the Aussie and Swiss Franc.

U.S. light crude oil, which is closely tied to the pace of economic growth, was flat after previously dropping more than 1 percent.