(Bloomberg) — The plunge in oil prices over the past two days following the twin shocks of President Donald Trump’s tariffs and the surprise boost in production from OPEC+ has altered the global energy landscape with stunning speed.

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Brent crude, the global benchmark, tumbled 13% through Thursday and Friday to just over $66 a barrel, casting new doubts on Trump’s quest to aggressively boost US fossil fuel output and achieve “energy dominance.” Across the Atlantic, the sell-off is poised to ease soaring energy costs in Europe but also squeeze Middle Eastern petrostates.

Already the oil market is tossing aside expectations for 2025. Goldman Sachs Group Inc., one of Wall Street’s long-standing crude bulls, cut its year-end price forecast on Thursday for Brent crude by $5, to $66 a barrel. Enverus has slashed more than a third from its demand-growth model. UBS Group AG, which at the start of the year forecast global demand would grow by 1.1 million barrels per day, is now cutting that up to nearly 50%.

“The moment that President Trump put the tariffs that were hammering on Canada almost two months ago, we had already downgraded our forecast,” said Al Salazar, head of macro oil & gas research at Enverus. “The timing of the OPEC announcement felt like them piling on.”

US oil futures settled near $61 a barrel Friday — well below the $65 threshold that many companies need to profitably drill new wells in Texas and surrounding states, according to a recent survey by the Federal Reserve Bank of Dallas. The trade war, meanwhile, is driving up the price of the drilling equipment, with pipe costs rising about 30% compared to levels before Trump imposed 25% tariffs on steel last month.

The combination of lower oil prices and higher costs threaten to derail Trump’s push for US drillers to ramp up production.

“I don’t think ‘drill, baby, drill’ was ever a near-term reality for US producers,” Leo Mariani, an analyst at Roth Capital Partners LLC, said Friday in a phone interview. “Now it’s not even a consideration.”

The S&P 500 Energy Index, comprised of US oil and gas companies, plunged 16% on Thursday and Friday. Among the biggest decliners were APA Corp., Diamondback Energy Inc. and Baker Hughes Co., which all fell more than 20%.