Saudi Arabia announced a surprise move to slash oil output to the lowest in 18 years as it tries to spur the recovery from an energy crisis that has devastated the kingdom’s finances. Just hours after unveiling a slew of dramatic austerity measures, Saudi Arabia said it would cut oil output by another 1 million barrels a day on top of what it already agreed with OPEC allies. Oil futures rose, and Kuwait and the United Arab Emirates followed up with extra cuts of their own.

“We have to be ahead of the curve,” Saudi Oil Minister Prince Abdulaziz bin Salman told Bloomberg News in a phone interview on Monday. “The voluntary cuts will further expedite the re-balancing process.” It’s a sign of the urgency in Riyadh to stabilize the oil market as rock-bottom prices force the kingdom to impose deep spending cuts and triple value-added tax. And it marks the latest step in Saudi Arabia’s retreat from the price war it started in March when it moved to flood the market with cheap crude after talks with OPEC+ allies broke down.

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The cuts come days after U.S. President Donald Trump spoke on the phone with King Salman. The White House said that both leaders had agreed “on the importance of stability in global energy markets.”

Trump has repeatedly put pressure on Saudi Arabia, Russia, and other OPEC+ countries to cut output in an effort to save the American oil industry. For some the cuts come too late: a large number of oil tankers dispatched weeks ago with Saudi crude are about to hit America’s shores, exacerbating the glut.