Wall Street Journal Markets News feed

The WSJ Dollar Index rose 0.1% — up three of the past four trading days.

The Dow falls more than 260 points, and oil prices surge.

Oil futures settled at their highest level since last summer as trader expectations of U.S. military action against Iran increased, raising concerns about eventual oil-flow disruptions.

U.S. natural gas futures settled lower with nearby months fluctuating around the key $3 level.

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Gold prices were broadly stable as investors closely monitored geopolitical developments in the Middle East and awaited the release of key U.S. inflation data.

Oil futures rose. The impact of a potential U.S. strike against Iran on oil prices would hinge on whether global supplies are disrupted, said Capital Economics.

The dollar strengthened as interest rates in the U.S. look increasingly likely to remain unchanged for the next few months.

U.S. natural gas futures rose on expectations that a cold spell across the Midwest and eastern U.S. will lift demand at the weekend and into early next week.