PRINCE William screamed at his brother during crisis Megxit talks, Harry has claimed.
The Duke of Sussex also alleges Charles lied during the tense meeting, while the Queen sat quietly "taking it all in".
Harry, 38, made the explosive claims in the latest instalment of his Netflix documentary, which hit screens today.
In episode five, when discussing how he and Meghan's future in the Firm was decided once they announced they wanted to leave, Harry said: "It was terrifying to have my brother scream and shout at me and have my father say things that simply weren't true, and my grandmother quietly sit there and sort of take it all in."
Meghan, 41, claims she wasn't invited to the Sandringham summit in January 2020, despite the outcome directly impacting her.
The former actress said: "Imagine a conversation, a round-table discussion about the future of your life when the stakes were this high and you as the mum and the wife and the target in many regards aren't invited to have a seat."
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Harry claimed it was "clear" his relatives had planned it so she wasn't in the room.
He went on to say: "I went in with the same proposal that we had already made publicly.
"But, once I got there, I was given five options. One being all in, no change. Five being all out.
"I chose option three in the meeting, half in, half out. Have our own jobs but also work in support of the Queen.
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"But it became very clear very quickly that that goal was not up for discussion or debate."
The prince, fifth in line to the throne, says he left the crunch meeting "without any solidified action plan".
While this was "really hard", he claims the worst part was what it did to his relationship with William, 40.
"It created this wedge between myself and my brother," Harry, speaking over clips of them playing in an old fire truck, said.
"He's now on the institution's side. And part of that I get, I understand.
"That's his inheritance so to some extent it's already ingrained in him that part of his responsibility is the survivability and the continuation of the institution."
The bombshell Netflix documentary also revealed...
- How the Queen told Meghan to handle the drama with her dad Thomas
- Meghan's claim that a palace aide told her she was a 'foreign organism'
- The Sussexes have changed their story five times
- Harry and Meg thought their first home was too small
- What Harry misses about the UK
- Unseen photos of Archie and Lilibet, and Meghan's baby scan
- Meghan's stunned response to a text from Prince William after the Sussexes' tell-all Oprah Winfrey interview
- Follow our live blog here
He added: "I think from their perspective, they had to believe that it was more about us and the issues we had as opposed to their part and the media and that relationship that was causing so much pain for us.
"They saw what they wanted to see."
But Harry said he doesn't blame his grandmother for the way things turned out.
"You have to understand from a family perspective, especially hers, there are ways of doing things and her ultimate mission-slash-responsibility is the institution," he said.
"People around her are telling her, 'by the way, that proposal or these two doing XYZ is doing to be seen as an attack on the institution' so she is going to go on the advice that she's given."
Following the talks, Buckingham Palace released a statement quashing claims of a brotherly rift.
It was jointly signed by both princes, but Harry claims he never saw it before it went public - pushing the Sussexes to move to Canada.
"That day, a story came out that part of the reason why Meghan and I were leaving was because William had bullied us out," Harry said.
"And once I got in the car after the meeting, I was told about a joint statement that had been put out in my name and my brother's name squashing the story about him bullying us out of the family.
"I couldn't believe it. No one had asked me permission to put my name to a statement like that.
"I rang M and I told her and she burst into floods of tears because within four hours they were happy to lie to protect my brother and yet for three years, they were never willing to tell the truth to protect us."
The duke said "there was no other option" but to leave the UK after the fallout from the meeting at Sandringham.
And Meghan said in episode five: "Suddenly, what clicked in my head was, 'it's never going to stop'.
"Every rumour, every negative thing, every lie and everything I knew wasn't true, and that the palace knew wasn't true and internally they knew wasn't true, was being allowed to fester."
Harry, who later moved his family to California, added: "So there was no other option at this point. I said that we need to get out of here."
In episode four, Harry appeared to throw further shade at his older brother.
The duke said it was felt Meghan was "stealing the limelight" from William - the person born to be a working royal.
He also suggested his wife was doing a better job than his sibling, who will one day be king.
Harry said: "The issue is when someone who's marrying in, who should be a supporting act is then stealing the limelight or is doing the job better than the person who was born to do this.
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"That upsets people. It shifts the balance."
Buckingham Palace has said it will be making no comment on today’s new Netflix episodes.