King Charles III has asserted a clear boundary with his son Prince Harry and daughter-in-law Meghan Markle, outlining their status as private citizens through a formal letter from Buckingham Palace. This move has reportedly caught the Duke and Duchess of Sussex off guard and has been followed by Uganda's withdrawal from the Invictus Games.

British broadcaster and photographer Helena Chard stated that the letter signifies King Charles drawing a decisive line, indicating no further discussion on the matter is required. "I'm sure the Sussexes expected flexibility. Prince Harry may be the king's son, but he lacks power to amend and dictate the monarch's statement," Chard told Fox News Digital.

The letter, issued on behalf of the King by the Lord Chamberlain, Richard Benyon, emphasized that Harry and Meghan are not working royals and that their His and Her Royal Highness styles remain in abeyance. According to reports, the Sussexes expressed surprise at not being informed of the letter's circulation in advance. A spokesperson for the couple told the BBC they were "a little surprised not to have been told about this in advance."

Sources close to the couple told People magazine that after receiving the letter, they sent back questions, only to be informed that it had already been circulated to the media. The official statement clarified that the couple are "private citizens" and that their "position, distinct from the State and Royal duties undertaken by the working Royal Family... will continue to be fully respected."

Chard noted that the guidance clarifies that Harry and Meghan "do not represent the Crown" and aims to prevent confusion for the public. "There is no ambiguity about who is in and who is out," she said. "The king is protecting the institution."

Royal commentator Richard Fitzwilliams suggested the letter was intended as a response to the Sussexes' return to Britain, which he characterized as blindsiding the royal family. "The Sussexes see themselves as public figures, not private citizens," he said. "So, they are ‘surprised,’ but are unlikely to alter their plans."

The situation intensified when Uganda announced its withdrawal from the Invictus Games on September 9. General Muhoozi Kainerugaba, head of Uganda's armed forces and son of President Yoweri Museveni, stated on X that the decision was made to avoid being construed as being opposed to King Charles III. "We shall not participate in anything that does not have His Majesty's approval," Kainerugaba wrote.

Kainerugaba told The Times of London that he had to "quash" support for the "Harry-Meghan nonsense" within the Ministry of Defence, stating, "I support the monarch. Period."

A source close to Prince Harry told People that the withdrawal was a direct result of the letter from the Lord Chamberlain, calling it a potential unintended consequence. However, British royal expert Hilary Fordwich dismissed this, stating, "Harry blaming this letter for Uganda pulling out of the Invictus Games is a ghastly move on his part."

Palace insiders have pointed out that the letter reiterates policies established at the 2020 Sandringham Summit, led by the late Queen Elizabeth II, shortly before the Sussexes stepped back as senior working royals. Royal author Robert Jobson told The Daily Mail that he does not anticipate a public exchange of words between the King and his son, noting that the King has no intention of responding further.