San Francisco Frontiers - Asian shares stumble after Trump's latest trade threat

The mood was also shaded by geopolitical concerns after the US president said personnel were being moved from the Middle East as nuclear talks with Iran faltered and fears of a regional conflict grew.

The equity losses snapped a recent rally fuelled by talks between Beijing and Washington in London that saw them hammer out a framework agreement to move towards a pact to reduce levies.

Investors have been on edge since Trump's "Liberation Day" tariff blitz on April 2 that sent shockwaves through stock and bond markets and stoked global recession fears.

Days later he announced a pause in those measures until July 9 to allow for countries to cut deals with the White House, sparking relief rallies that have pushed some markets towards all-time highs.

However, he once again shook confidence by saying Wednesday that he intended to send letters telling governments what levies Washington would be imposing.

"We're going to be sending letters out in about a week and a half, two weeks, to countries, telling them what the deal is," he told reporters.

"At a certain point, we're just going to send letters out. And I think you understand that, saying this is the deal, you can take it or leave it."

While some analysts indicated that previous threats had been rowed back, the comments added to the ongoing uncertainty about Trump's policies, reviving fears about sky-high levies and the impact on the economy.

They also came not long after he had flagged the London agreement, and posted on social media that "President XI and I are going to work closely together to open up China to American Trade", referring to his counterpart Xi Jinping.

"The uncertainty doesn't help," Nick Twidale at AT Global Markets Australia said. "And his overall comments overnight have led to more uncertainty for the market rather than the clarity we were hoping for."

Most Asian markets fell on Thursday, with Tokyo, Hong Kong, Shanghai, Wellington, Taipei and Jakarta in the red after a broadly healthy run-up this week. There were gains in Sydney, Singapore and Seoul.

The weak performance followed losses on Wall Street, where trade worries overshadowed another below-forecast inflation reading that provided fresh speculation the Federal Reserve will cut interest rates.

Oil prices slipped but held most of Wednesday's surge of between four and five percent that came after Trump said US personnel were being moved from the potentially "dangerous" Middle East as Iran nuclear talks stutter.

The move came as Tehran threatened to target US military bases in the region if a regional conflict broke out.

The US president said the staff were "being moved out because it could be a dangerous place".

"We've given notice to move out and we'll see what happens."

With regard to Iran, he then added: "They can't have a nuclear weapon, very simple. We're not going to allow that."

Trump had until recently expressed optimism about the talks, but said in an interview published Wednesday that he was "less confident".

- Key figures at around 0230 GMT -

Tokyo - Nikkei 225: DOWN 0.7 percent at 38,149.49 (break)

Hong Kong - Hang Seng Index: DOWN 0.7 percent at 24,206.17

Shanghai - Composite: DOWN 0.1 percent at 3,397.51

Euro/dollar: UP at $1.1514 from $1.1489 on Wednesday

Pound/dollar: UP at $1.3576 from $1.3545

Dollar/yen: DOWN at 144.01 yen from 144.62 yen

Euro/pound: UP at 84.81 pence from 84.79 pence

West Texas Intermediate: DOWN 0.5 percent at $67.83 per barrel

Brent North Sea Crude: DOWN 0.5 percent at $69.44 per barrel

New York - Dow: FLAT at 42,865.77 (close)

London - FTSE 100: UP 0.1 percent at 8,864.35 (close)

N.Wilson--SFF