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DUBAI, United Arab Emirates — Global energy prices spiked Sept. 16 after a weekend attack on key oil facilities in Saudi Arabia caused the worst disruption to world supplies on record, an assault for which President Donald Trump warned that the U.S. was “locked and loaded” to respond.

Oil rose after four days of losses as President Donald Trump gave mixed signals on resolving the U.S.-China trade dispute.

NEW DELHI — Oil giant Saudi Aramco is buying 20% of Indian conglomerate Reliance Industries’ oil and chemicals business for about $15 billion.

DALLAS — America’s rediscovered prowess in oil production is shaking up old notions about the impact of higher crude prices on the U.S. economy.

Oil gained above $71 a barrel in New York as Tropical Storm Gordon forced evacuations at fields along the U.S. Gulf Coast and threatened supply.

WASHINGTON — Oil and gas executives have watched wearily in recent years as the relationship between the United States and Russia deteriorated, steadily closing off their ability to drill the vast shale plays underlying Siberia and the deep-water oil fields off Russia’s Arctic coast.

The dark storm clouds that have been hanging over the oil industry during the crude-price slump have suddenly started raining cash.

Oil prices declined for the week of July 3, as expanded U.S. drilling activity and added production offset a larger-than-expected drop in stockpiles.