(The opinions expressed here are those of the author, a

columnist for Reuters.)

By Mike Dolan

LONDON, Sept 2 (Reuters) - What matters in U.S. and

global markets today

By Mike Dolan, Editor-At-Large, Finance and Markets

It may just be the 'back to school' trade, but September is

bringing a sudden burst of financial market volatility as

Americans return from Labor Day, with the dollar, long-term

government bond yields and record-high gold all surging on

Tuesday.

Although worries abound about mounting public debt, tariffs and

Federal Reserve independence, it was difficult to identify any

precise trigger for the sequence of overnight market moves - and

hard to connect the dots. Rising long-term government bond

yields in Britain, France and the United States may reflect debt

concerns as we enter the annual budget season and higher oil

prices aren't helping things, but the simultaneous rise of gold

and the dollar made less sense.

The rise in volatility has knocked back stocks worldwide.

* Europe was the epicentre of Tuesday's bond jolt, with France's

30-year government bond yields hitting their highest in over 16

years as Prime Minister François Bayrou began talks with

political parties in a bid to prevent a government collapse over

his budget. Britain's 30-year borrowing costs rose to their

highest levels since 1998 and sterling slid more than 1% on

Tuesday, with this week's reshuffle of PM Keir Starmer's

economic team ahead of the Autumn budget raising questions about

the position of Chancellor Rachel Reeves. With Fed independence

a key focus in a big week for labor data on Wall Street, U.S.

30-year yields stalked 5% yet again and hit their highest in

over a month - sending the 2-to-30-year yield curve to its

highest in almost four years.

* With China's gathering of its Russian, North Korean and Indian

allies this week as a backdrop, gold soared to record highs on a

heady mix of long-term inflation and government debt concerns -

bursting through April's prior peak to top $3,500 per ounce and

clocking year-to-date gains of 33%. However, the dollar -

unusually in times of stress this year - also surged against the

euro, sterling, yen and yuan - with U.S. payrolls eyed,

real-time U.S. GDP estimates running at 3.5% for the third

quarter and August manufacturing surveys due later.

* Elsewhere, global stocks were down generally - with Wall

Street futures down about 0.5% after a rough session last Friday

saw a 1%-plus shakeout in the tech sector. There was also a wave

of uncertainty over fresh legal challenges to President Trump's

'reciprocal' tariffs - a ruling that arrived after Friday's

closing bell. The tech wobble hit Japanese and South Korean

stocks on Monday, but they recovered some of that today. Aside

from the government bond angst in Europe, there was a focus on

Nestle's 1% share slip after the Swiss food giant ousted Chief

Executive Laurent Freixe a year into his tenure.

Today's column explores the implications of the legal challenges

to Trump's 'reciprocal' tariffs and how they complicate an

already messy policy picture.

Today's Market Minute

* China's President Xi Jinping convened his Russian and North

Korean counterparts together for the first time on Tuesday, a

show of solidarity with countries shunned by the West over their

role in Europe's worst war in 80 years.

* Nestle (NESN.S) investors were pitched back into choppy

waters on Tuesday after the Swiss food giant changed its CEO for

the second time in a year, ousting boss Laurent Freixe over an

affair he had with a subordinate.

* U.S. Treasury Secretary Scott Bessent said on Monday the

Federal Reserve is and should be independent but said it had

"made a lot of mistakes" and defended President Donald Trump's

right to fire Fed Governor Lisa Cook over allegations of

mortgage fraud.

* The complex web of Western sanctions targeting Russia's oil

and gas industry has failed to impede Moscow's energy flows or

its war effort, writes ROI energy columnist Ron Bousso,

suggesting that time and overuse are blunting the force of U.S.

and European financial weapons.

* Asia's imports of crude oil rebounded in August as heavyweight

buyers China and India bought more crude from top exporters in

the Middle East. But is this being driven by demand or price?

Read the latest from ROI columnist Clyde Russell.

Chart of the day

As government budget season looms in Europe and anxiety

about U.S. debt loads and central bank independence linger

stateside, long-term public borrowing rates are climbing and the

so-called yield curve gaps between 2-year maturities and 30-year

tenors is widening to reflect much of that long-term

uncertainty. French and British yield curves are now at their

steepest since 2017 and the U.S. curve is at its steepest since

2021.

Today's events to watch

* U.S. August manufacturing surveys from S&P Global (9:45 AM

EDT) and ISM (10:00 AM EDT)

* Chinese President Xi Jinping to meet Russian President

Vladimir Putin in Beijing

* U.S. Secretary of State Marco Rubio visits Mexico

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(The opinions expressed here are those of the author, a

columnist for Reuters)