Image source, EPA

President Joe Biden has commented on Trump's impeachment trial.

"I am just anxious to see what my Republican friends do, and if they stand up," he told reporters outside the White House.

The Bidens and their two German shepherds were viewing the first lady's Valentine's Day display on the North Lawn this morning, which had been set up overnight.

As they walked back to their residence, a reporter asked Biden if he was planning to speak with any Republicans about the trial. He replied curtly that he was not.

Biden has remained mostly tight-lipped about the impeachment process of his predecessor, saying it is the job of Congress to decide the outcome.

But on Thursday he said "some minds might be changed" by new video footage of the Capitol riot presented by impeachment managers on Wednesday.

Despite some acknowledgement from Republicans that Democratic impeachment managers have made powerful arguments, there's no indication it has changed any minds.

Some Republican senators are still insisting that the trial remains unconstitutional, since Trump is now a private citizen, and is therefore a waste of time.

Seventeen Republican senators would have to vote against Trump to give the two-thirds majority for him to be convicted.

Here is what some Republicans said after yesterday's hearing:

Image source, Getty Images

The question at the heart of this trial is, did Donald Trump incite his supporters to storm the Capitol on 6 January?

The Democrats, who have brought the impeachment case, say yes. They have spent two days presenting evidence to show why.

Trump’s lawyers have argued he was exercising his right to free speech and will soon begin setting out their case.

You can decide for yourself in our near hour-by-hour account of what then President Trump said on 6 January and what his supporters did.

Anthony Zurcher
BBC North America reporter

For almost a month, the House impeachment managers had been preparing for this day, when they brought their case against Donald Trump for inciting an insurrection at the US Capitol to a close.

Their presentation was as much about setting the evidence for the American public and the history books as it was convincing 67 out of 100 senators to convict. To do this, they laid out a three-part roadmap of their prosecution.

On Tuesday, they tried to show how Trump provoked the attack on the Capitol, then went - step by step, in meticulous detail - through the events of that day.

Then, yesterday, they discussed the "harm" that the president has done with his words and actions - harm that, they said, went well beyond the violence of 6 January.

So what were the main takeaways from day three? Read what I've picked out here.

Image source, Reuters

We've heard a lot of people speak about Donald Trump over the past few days, but the man himself has been out of sight.

Banned from Twitter, Trump has not shared his thoughts about the trial - or much of anything else in his post-presidency.

But here's what we do know.

The former president now lives in Florida, and on Tuesday he received some good news when the Palm Beach city council voted to allow his permanent residency at his club, Mar-a-Lago, where he has been seen playing golf.

He has declined to testify in the ongoing impeachment trial and will not be present at today's hearing, when his lawyers present his case.

Why is Donald Trump being impeached? Here's a run-down of the case against him:

• He's accused of “incitement of insurrection against the Republic he swore to protect” - namely the storming of Congress by a mob of his supporters on 6 January
• Democrats say his repeated refusal to concede the election to Joe Biden and his 6 January speech encouraged the riot
• They say he should be disqualified from ever running for office again.

And his defence?

• Trump's lawyers say that because he is now a private citizen the trial is unconstitutional. They also say the proceedings are in violation of his right to free speech
• They will also argue that Trump's supporters stormed Congress of their own accord, and that his pre-riot remarks did not amount to incitement.

Read more on the case for the prosecution and defence here.

Presenting the prosecution's closing arguments yesterday, impeachment manager Joe Neguse had some stark words of warning.

Calling Donald Trump "overwhelmingly guilty" of inciting the riots on 6 January, he went back through the former's president's claims that the election he lost was fraudulent.

He concluded: "If we let this go unanswered, who's to say it won't happen again?"

Image source, Reuters

The fourth day of the trial in the Senate gets under way at noon in Washington (17:00 GMT).

Over the last two days we’ve heard Democrat prosecutors set out their case that Trump incited the 6 January riots, both through his words on the day and his repeated declarations that the November 2020 election result was fraudulent. Today, Trump’s defence team will have its turn.

We already know their two principal arguments - that Trump was allowed to call the election fraudulent under his first amendment right to free speech, and that the impeachment trial itself is unconstitutional because Trump is no longer a sitting president.

Trump’s team has up to 16 hours over two days to present its case, but his lawyers have previously said they expect to wrap up by this evening.

Under the rules:

• Both sides have 16 hours each to present their case
• Neither side can exceed eight hours of presentation in any one day and they cannot take more than two days to present overall
• After that, the Senate will have a total of four hours to question both sides.
• If the prosecutors choose to call witnesses or request more documents, each side can then have four hours to make their case
• The two parties will then have a total of four hours to make their closing arguments.

Both Republicans and Democrats are said to be keen on a speedy trial, so we could see a vote on conviction as early as this weekend if there are no witnesses to hear from.

Image source, Reuters

Hello and welcome to our live coverage of day four of Donald Trump’s impeachment trial in the US Senate.

So far we’ve been hearing from the prosecution - but today, the former president’s legal team will be presenting their defence.

Here’s a quick recap of what happened on Thursday.

• Prosecutors began the day by playing clips of rioters who stormed the Capitol on 6 January, which they said showed that Trump’s base thought they were doing his bidding.
• They argued that Trump had shown no remorse, and that letting him go unpunished would allow Trump or other presidents to cause similar problems in the future.
• They also detailed the harm, physical damage and trauma caused by the riot had damaged the US’s credibility abroad.
• When recapping their arguments, they also started an initial rebuttal to the two main arguments expected from the defence: that the trial itself is unconstitutional, and that the president was exercising his right to free speech when he declared that the election result was fraudulent.

Throughout the day we’ll bring you all the latest updates as they happen, as well as context and background to help keep you fully across the story.