Barring a late settlement, Harry’s lawsuit against News Group Newspapers will begin Monday, with potential consequences for the royal family, the media baron and even The Washington Post.

FILE PHOTO: Prince Harry, Duke of Sussex, looks on during a Diana Award panel about mental health at the 2024 Concordia Annual Summit, held at the Sheraton New York Times Square in the Manhattan borough of New York City, U.S., September 23, 2024. REUTERS/Bing Guan/File Photo

Harry's blockbuster fight with The Sun could derail the King's relaunch and deepen divisions between the two - unless a last minute deal stops the duke in his tracks

The trial to determine Prince Harry's lawsuit against Rupert Murdoch's British newspaper group begins at the High Court in London on Tuesday with King Charles' younger son set to appear as a witness once again.