WASHINGTON, DC, United States (AFP) — Wall Street was braced Sunday for significant losses at the start of the week over Donald Trump’s punishing tariffs on exports to the United States, as oil prices plummeted even with countries seeking compromise.

The Republican has remained defiant since unleashing the blitz of tariffs on stunned nations around the world last Wednesday, insisting that his policies “will never change” even as markets went into a tailspin.

Futures contracts for the New York Stock Exchange’s main boards were sharply down Sunday, suggesting more pain for battered Wall Street stocks when markets open Monday, while US oil dropped below US$60 a barrel for the first time since April 2021.

A little over half an hour after the contracts resumed trading at 2200 GMT, the Dow Jones Industrial Average was down 3.56 per cent, while the broader S&P 500 index was down 3.85 per cent.

Benjamin Netanyahu, the prime minister of Israel — which has been hit with 17 per cent tariffs, despite being one of Washington’s closest allies — will fly in for crunch talks with Trump Monday on the levies.

Britain’s Prime Minister Keir Starmer warned in a newspaper op-ed that “the world as we knew it has gone”, saying the status quo would increasingly hinge on “deals and alliances”.

Trump’s staggered deadlines have left space for some countries to negotiate, even as he insisted he would stand firm and his Administration warned against any retaliation.

“More than 50 countries have reached out to the president to begin a negotiation,” Kevin Hassett, head of the White House National Economic Council, told ABC’s This Week on Sunday, citing the US trade representative.

Vietnam, a manufacturing powerhouse that counted the US as its biggest export market in the first quarter, has already reached out and requested a delay of at least 45 days to thumping 46 per cent tariffs imposed by Trump.

Hassett said countries seeking compromise were doing so “because they understand that they bear a lot of the tariffs”, as the Administration continues to insist that the duties would not lead to major price rises in the United States.

“I don’t think that you’re going to see a big effect on the consumer in the US,” he said.

Treasury Secretary Scott Bessent also told NBC’s Meet the Press that 50 countries had reached out.

But as for whether Trump will negotiate with them, “I think that’s a decision for President Trump”, Bessent said.

“At this moment he’s created maximum leverage for himself… I think we’re going to have to see what the countries offer, and whether it’s believable,” Bessent said.

Other countries have been “bad actors for a long time, and it’s not the kind of thing you can negotiate away in days or weeks”, he claimed.

Despite hopes for negotiations to avert the worst economic carnage, there was widespread fear that the markets bloodbath could continue into the new trading week.

In Saudi Arabia, where the markets were open Sunday, the bourse was down 6.78 per cent — the worst daily loss since the COVID-19 pandemic, according to State media.

Larry Summers, formerly director of the National Economic Council under President Barack Obama, said “there is a very good chance there’s going to be more turbulence in markets the way we saw on Thursday and Friday”.

Peter Navarro, Trump’s tariff guru, has pushed back against the mounting nervousness and insisted to investors that “you can’t lose money unless you sell”, promising “the biggest boom in the stock market we’ve ever seen”.

Russia has not been targeted by the latest raft of tariffs, and Hassett cited talks with Moscow over its invasion of Ukraine as the reason for their omission from the hit list.