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This is the World and brief from The Economist.

Our top stories.

Jerome Powell, chairman of the Federal Reserve, said America's economy was, quote, in good shape,

despite, quote, elevated uncertainty.

He added that officials, quote, do not need to be in a hurry to cut interest rates.

On Friday, official data showed America's economy added 151,000 jobs in February, missing forecasts of 160,000.

The unemployment rate rose by 4% to 4.1%.

The SMP 500 index ended the week down by 3.1%.

It's worse run since early September.

Donald Trump said he had written to Aetola Ali Harmony, Iran's supreme leader, about negotiating a nuclear deal.

During the first term, America's president abandoned a nuclear pact with Iran, which he said was too generous, yet he failed to secure

a stricter agreement. Earlier, Mr. Trump said he was, quote, strongly considering sanctions

and tariffs on Russia until it makes peace with Ukraine.

Donald Tusk, Poland's prime minister, said the country will expand its army to 500,000 troops

and provide military training to all adult men. He said the country was in, quote, serious talks

with France about using its nuclear capabilities to defend Poland and warned that Russia is

...