A royal expert is speaking out this week to say that Prince Charles can’t “deal” with the attacks coming from his son Prince Harry because he is “immensely sensitive.”

Royal expert Stewart Pearce, who was friends with the late Princess Diana, told US Magazine that his remarks are “just simply categoric observations about how perhaps [some royals’] behavior [were] not always as emotionally intelligent as it could be.”

“For example, Prince Charles is a very, very shy man, a very sensitive and delicate man, but we see his public personality, but in private, he’s immensely sensitive,” he added.

Pearce went on to say that “when we’re sensitive, if we’re dealing with very strong, combustible emotion on the outside of us,” people tend to go with a fight or flight response. This was clear when Diana accused Charles of having an affair with his now-wife Camilla.

“So, what he did was to shrink back and as a result of that became an aloof,” Pearce said. “Well, that doesn’t heal the challenge that’s taking place.”

“That’s what Charles does. … He can’t deal with it because of his sensitivity, so he hides,” he continued. “And what Harry’s trying to do is to heal that. Not out of umbrage, not out of anger or revenge or criticism or accusation. … I felt that he was just somebody saying, ‘This is the way that it is, and this is why we want to make change.’”

This comes after Harry attacked Charles’ parenting skills in his new mental health docuseries The Me You Can’t See.

“My father used to say to me when I was younger, he used to say to [Prince] William and I, ‘Well, it was like that for me, so it’s gonna be like that for you.’ That doesn’t make sense,” Harry said. “Just because you suffered, it doesn’t mean that your kids have to suffer. In fact, quite the opposite. If you suffered, do everything you can to make sure that whatever experiences, negative experiences that you had, you can make it right for your kids.”

A royal source said that Charles was livid about the series.

“Charles is boiling with anger and feels tortured by Harry with his constant digs. He wishes he’d just let it drop,” the insider explained. “The general consensus within the royal family is to ignore Harry’s behavior, to avoid fanning the flames, but Charles is finding it hard to hold back. He really wants to defend himself.”