King Charles is heartbroken over not getting to see his grandchildren, Prince Archie and Princess Lilibet, according to a source.
The young royals live with their parents Prince Harry and Meghan Markle in Montecito, California.
The King has not seen Archie, 4, or Lilibet, 2, this year and it is unclear when the children will next be in the UK.
Prince Harry attended King Charles's Coronation on his own in May 2023 as his wife Meghan Markle chose to stay in the US with their children.
The young royals live with their parents Prince Harry and Meghan Markle in Montecito, California.
PA
The Duke and Duchess of Sussex have been feuding with the Royal Family for almost three years.
The couple stepped down as working members of the monarchy in 2020 and moved to the US shortly after.
A source told the Mail that the King is "very sad" that he does not regularly see Prince Harry and his son's children.
The source said: "There's a lot of hurt on both sides, but time is a healer. For now, it is baby steps forward."
The Duke and Duchess of Sussex have been feuding with the Royal Family for almost three years.
PA
They added: "It's very sad His Majesty doesn't get to see his son or his grandchildren, but there's no rush to patch things up."
The source also claimed that Prince Harry's public attacks on the Royal Family are a source of "great pain" for King Charles.
Harry has launched multiple attacks on the Royal Family through TV interviews and his bombshell autobiography Spare.
The source said: "Has His Majesty made mistakes when it comes to parenting? Yes.
LATEST ROYAL NEWS:
Harry has launched multiple attacks on the Royal Family through TV interviews and his bombshell autobiography Spare.
PA
"Would he privately admit he could have done some things better, or at least differently? Of course.
"But while I am sure they still don't agree on everything all the time, he and the Prince of Wales are firmly united now around a common shared interest, which is to keep the institution in a place where it can serve the nation.
"This was happening anyway as the late Queen got older, but there's no doubt what happened with Harry brought everything into sharp relief."
The source added that King Charles feels "great pain" over his relationship with Prince Harry and that there is "barely any level of communication" between the monarch and his son.
