Speaking at a campaign rally, former President Donald Trump says that Democrats are having a "full-scale breakdown" and challenged US President Joe Biden to another debate without moderators
Biden and his campaign have faced growing pressure to step aside after a widely-panned debate performance against Trump last month
Biden was in Washington DC today, and emphasised the importance of Nato at the opening of the alliance's summit
During the speech, he Ukraine would receive "dozens of additional tactical air defence systems"
With his re-election campaign facing intense scrutiny, Biden appeared to use the speech to contrast his foreign policy views with Trump's
Earlier in the day, the White House news briefing grew heated when reporters pressed for more information about Biden's health and fitness
Democratic lawmakers have held meetings today after concerns were raised about Biden's ability to beat Trump in the race for the White House
The White House briefing has just finished, and was once again dominated by questions about Biden's age, health and re-election campaign.
Spokeswoman Karine Jean-Pierre insisted that Americans want Biden to run and was committed to his campaign.
"This is the story. This is him standing for millions of Americans," she concluded.
Rachel Looker
Reporting from Capitol Hill
Jean-Pierre says Biden's recent increase in public activity (a phone call with donors, speaking with members of Congress, the weekend's ABC News interview, a call into the Morning Joe TV programme) has been something the president personally decided to do to step up outreach.
"He's ready. He's on fire," Jean-Pierre says, adding that he also wants to increase engagement with the press.
"He wants to get out there and continue to show that he has more work to do. He has more important issues for the American people to get done," she says.
Questions briefly turn to King Charles, who reportedly wants to visit his grandchildren in California.
Jean-Pierre is asked if Biden and British PM Keir Starmer will discuss a potential official US visit by the King.
She says that she has nothing to confirm, but notes that Biden will hold a bilateral meeting with the newly elected British PM during the Nato summit.
"The president looks forward to that," she says. "And an upcoming visit by King Charles - I don't have anything to share."
Rachel Looker
Reporting from Capitol Hill
Karine Jean-Pierre is asked what success looks like for Biden at the NATO summit this week, which is being held in Washington DC.
"The president wants to continue to strengthen that partnership and those alliances," she says.
Image source, Getty ImagesA reporter asks what makes Biden convinced that the Democratic voters wants him to run, given that a recent poll showed a significant number believed he was too old.
"You all have been asking about polling and his age for a year now," says Jean-Pierre, adding that she will not be discussing specific polls.
Over the course of his presidency, "the president has been out there talking to voters," she says, adding that he has spoken to numerous supporters at campaign events in recent days.
"There's nothing that takes away, all respect to the polls out there, with engaging with Americans," she says.
Rachel Looker
Reporting from Capitol Hill
When asked about whether the president's words matter after his debate performance, White House press secretary Karine Jean-Pierre says Biden has owned up to that night and admitted it was a bad night.
"When you're the president of the United States, I think any leader - especially including a former president - your words do matter," she says.
"We do believe that we should not just look at the 90 minutes. The president has done more than any other modern day presidents, administrations, historic things have gotten done," she says.
Image source, ReutersHunter seen speaking to his father on the day of his criminal conviction
A reporter asks about the role that Biden's wife, Jill, and son, Hunter, play in his decisions.
Peter Doocy asks if Jill Biden is "making decisions" for the White House.
"No, the president is the president, he makes decisions," says Jean-Pierre.
The reporter then asks about the president's son Hunter Biden, who was convicted on felony gun charges last month, and is awaiting sentencing.
The White House spokeswoman is asked if Hunter is receiving classified information during his conversations with his father.
Jean-Pierre responds that no, Hunter is not receiving any classified information.
Rachel Looker
Reporting from Capitol Hill
Image source, Getty ImagesWhen asked if Biden has seen enough support this week to move forward with his campaign, White House Press Secretary Karine Jean-Pierre says Biden is focused on what's ahead and pointed to his schedule. He'll be traveling to Las Vegas and Texas in the upcoming week.
This is a similar question the White House press pool asked earlier in the briefing.
"The president is going to move forward and he's going to continue to go out there and engage with the American public... and he's going to stay focused on that," she says.
"He is more determined than ever to continue to get the job done."
For the second day in a row, the mood in the briefing room has turned tense.
A journalist asks whether the last few weeks - as Biden's health and candidacy for president has come under scrutiny since his poor debate performance against Donald Trump - have made Karine Jean-Pierre reconsider anything she has said from the White House podium.
"I think there have been moments here when I have said - especially in the gaggle and actually yesterday - if I have said (or) misled in something that I've I said, or haven't had the full information, I actually own up to that and I actually say 'I will do my best to get you the information,'" Jean-Pierre says.
"It has been an unprecedented time, I think you guys can admit that," she says to the White House press corps.
"We are meeting the moment - a new moment that has never really existed before," she adds.
The journalist then asks about other instances in which Biden's fitness was raised in recent months, and Jean-Pierre says she may need more time to answer questions that happened less recently, but that in general - her explanations from previous months have not changed.
The Fox News reporter at the White House begins his line of questions by asking if Biden commits to fulfilling a second four year term if he is re-elected.
"Yes," says spokeswoman Jean-Pierre.
The press secretary comes under questioning about President Biden's health.
In response, she lists members of Congress who have stood by him.
"There's support for him," she says, trying to move the conversation on.
"He had a bad night, we've talked about it, he understands people's concerns."
Nomia Iqbal
Reporting from the White House
It is more or less a full house for the briefing with the press secretary. Yesterday it turned combative with questions over the visit of a neurologist to the White House.
We were waiting for more than an hour and a half for the presser to begin today. It’s a fairly muted atmosphere at the moment.
Today is the start of NATO and the Biden administration is keen to focus on that, but the questions are still coming on the President’s health - particularly on the letter released by Biden last night.
Press Secretary Karine Jean-Pierre says clearly that Biden is not being treated for Parkinson’s Disease.
She is defending the administration again over accusations the White House isn’t being honest.
Rachel Looker
Reporting from Capitol Hill
White House Press Secretary Karine Jean-Pierre reiterated that the administration respects the views of congressional members, many of whom have expressed support for the president, she says.
"We do want to turn the page... We want to get to the other side of this. We want to continue doing the work and that's what the president is going to do," she says.
Image source, Getty ImagesWhite House spokeswoman Karine Jean-Pierre is asked about yesterday's briefing, which turned tense at points.
A reporter asks why some of the information in a letter released by Biden's physician last night - which discussed why and when a neurologist had visited the White House in recent months - was not shared from the podium Monday afternoon.
Jean-Pierre takes issue with that question and says the information in the letter was covered in yesterday's briefing. She confirms again that Biden has seen a neurologist three times over the course of his presidency - during his annual physical exams.
Jean-Pierre said yesterday that Biden is not being treated for Parkinson's disease, a question which had been raised due to the neurologist's presence at the White House.
Rachel Looker
Reporting from Capitol Hill
Image source, Getty ImagesWhen asked if Biden feels like he has beat back efforts for him to step aside, Karine Jean-Pierre said the president spoke "forcefully" and "passionately" about where he stands and how he sees things moving forward when he called into television programme Morning Joe yesterday.
"We respect members of Congress, we respect their view, but I also want to say there's a long list of congressional members who have been very clear in support of the president," she said.
President Biden will meet Ukrainian leader Volodymyr Zelensky on Thursday afternoon.
White House press secretary Karine Jean-Pierre says the meeting will happen on the sidelines of the Nato summit, just before a meeting of the Nato-Ukraine council.
It will be the third time the two leaders have met in recent weeks, the press secretary says.
White House Press Secretary Karine Jean-Pierre has started addressing reporters for the afternoon briefing -- she apologised for the delay, saying she had been in the Oval Office speaking with President Joe Biden about the latest updates on Hurricane Beryl relief in Texas.
Biden has spoken with local authorities, Jean-Pierre says, as the area around Houston deals with power outages and extreme heat in the aftermath of the storm.
The White House briefing has just started.
You can watch it live at the top of this page.
We will also bring you text updates on major lines, so stick with us.
Rachel Looker
Reporting from Capitol Hill
House Democratic Caucus Chair Pete Aguilar, a California lawmaker, has just held a press conference.
It comes after the party’s caucus meeting earlier today.
“There was no instruction to get on the same page,” Aguilar said of the meeting.
"We were talking about the twin goals we have – preventing Donald Trump from ever setting foot in the White House and getting 218 votes for Hakeem Jeffries on Jan 3. That is the focus of House Dems.”
Aguilar added that every member of the caucus is “clear eyed about what the stakes of this election are”.
“What House Democratic caucus leadership is asking are members to do is to talk about the importance of preventing Donald Trump from ever setting foot in the White House," he said.
“President Biden is the nominee and we support the Democratic nominee that will beat Donald Trump," he added. "That is a fact. That is where we are."
We are still waiting for that White House update (which was scheduled to start at 13:00 EDT/ 18:00 BST).
We're live streaming inside the briefing room at the top of this page if you'd like to watch along.
In the meantime, here's a video of Democratic politicians who earlier today were speaking about Joe Biden as their leader.
Biden still the answer for many Democratic lawmakers