Prince Harry, Meghan Markle issued new warning: 'Can't win campaign' against royal family

Prince Harry and Meghan Markle have been warned that they 'cannot win campaign' against Royal Family as King Charles has upper hand.

The Duke and Duchess of Sussex are "losing the power struggle" against the new Britain's monarch, according to one royal expert.

Daniela Elser cited the California-based couple's falling popularity as well as jokes made at their expense as evidence that the couple's "PR campaign" against the royals has backfired.

"Harry and his wife Meghan, the Duchess of Sussex, might have spent the last two years waging an exhausting, never-ending battle of wits and PR strategy against The Firm, but they have actually ended up on the losing side," claimed Ms Elser.

She added: "Over the last two years, the Sussexes have thrown a hell of a lot of criticism at Charles, Queen Camilla, William and Kate, and the institution of the monarchy as a whole."

King Charles's younger son Harry has recently released a tell-all memoir, Spare, which slammed several members of the Firm and revealed numerous intimate moments in the Duke's life. The book became an overnight best seller but has cost the Sussexes, according to Ms Elser.

The expert went on saying that the Sussexes had become the butt of jokes in the US with comedians Chris Rock, Jimmy Kimmel and Trever Noah all hitting out at the Duke and Duchess while the hit TV show South Park dedicated a whole episode to mocking the couple.