Hello and welcome to Newsa from the BBC World Service

come in you live from our studios in Central London.

I'm Julian Marshall.

Donald Trump is a genuine threat to this nation.

He's a threat to our freedom.

He's a threat to our democracy.

He's literally a threat for everything America stands for.

And perhaps President Biden speaking a few hours ago, vigorous, coherent, defiant, addressing a

campaign rally in the US state of North Carolina, but it was his

faltering performance in last night's TV debate with Donald Trump that is causing some

Democrats to ask whether he should continue as the

party's candidate in November's election. They have long been questions about

whether the 81-year-old that Mr Biden has the mental and physical stamina to serve a second term but they

were brought into sharp focus during the 90 minute bad-tempered and personal debate which was marked by Mr. Trump making a

string of false or misleading claims and President Biden sounding hoarse for much of

the time and speaking in New Zealand earlier, the chair of the Democratic

National Committee, Jamie Harrison, defended the President's record and said he would

remain as the Democratic Party's nominee.

The President has been doing this work for a long time.

He understands what he did well last night

and what he didn't do well.

But ultimately, again, a presidency is not defined by 90 minutes on television.

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