The Royal Family's clever strategy is working as rage-fuelled Prince Harry's popularity continues to suffer, says Cameron Walker

The Duke of Sussex claims Buckingham Palace "leaks and plants stories" to paint him and his wife, Meghan, as "villains" in order to make more senior members of the Firm look good.

This is, of course, just Prince Harry's version of the truth. There are two sides to every story, and both Buckingham Palace and Kensington Palace are not commenting on the recently leaked extracts of Prince Harry's memoir 'Spare', due to be published on January 10.

An extract published by The Guardian newspaper claims Prince Harry alleges his brother "grabbed me by the collar, ripping my necklace, and...knocked me to the floor."

The Duke claims William later apologised, but this doesn't hide the fact the heir to the throne allegedly "physically attacked" his brother, who claims he sustained injuries to his back when he fell on a china dog bowl.

Some have made the argument that all brothers squabble. Perhaps, this is true. The problem for William, and the royal household, is private moments and conversations with family members may now come to light in explosive detail when Harry's full memoir is published next week.

The question is - will the Royal Household stick to its "never complain never explain" motto?

In my opinion, their PR strategy is working. The latest YouGov opinion poll shows the popularity of the Duke and Duchess of Sussex slumped just before their Netflix docuseries was released last month.

Meanwhile, other members of the Royal Family (apart from Prince Andrew) remain more popular with the British public.

If the Palace engaged in a Hollywood-style 'tit-for-tat' argument across the Atlantic, opinion polls might suggest a less favourable outcome.

In a separate extract published by Page Six, Prince Harry claims he wore the Nazi uniform to a party in 2005 following advice from William and Catherine.

The Duke claims he had a choice between a pilot uniform and a nazi uniform to wear at a "native and colonial" themed party. He spoke to Will and Kate about his conundrum, who allegedly told him to choose the Nazi uniform.

Prince Harry claims his brother "howled with laughter" when he saw him dressed in the uniform.

A picture, published by The Sun at the time, damaged Prince Harry's reputation.

The Duke of Sussex appears to be finding other people to blame for his choice of costume, something he later described as "one of the biggest mistakes" of his life.

Perhaps it was not brilliant advice from William and Catherine, but Harry was in his early twenties in 2005 and was therefore an adult.

As far as I can tell, no one forced him to dress up as a Nazi. He did this of his own free will.

What will sadden the Royal Family is an intimate moment Prince Harry shares between himself, his brother and his father following the Duke of Edinburgh's funeral in April 2021.

In another extract published by The Guardian, Prince Harry quotes his father (then Prince Charles) who was standing between his sons "looking up at [their] flushed faces".

Prince Charles is quoted saying "Please, boys, don't make my final years a misery."

This is, perhaps, the extract that will sadden the Royal Family most of all. A deeply personal and private moment has been shared with the world.

It shows a loving father, who had recently lost his own dad, heartbroken that his sons continue to fight each other.

That loving father is now King, having recently lost his own mother.

His youngest son, Harry, appears unwilling to give up the fight.