Prince William urged to take THIS bold step before becoming King

Prince William has been urged to take a major step before becoming King over fears the Prince of Wales will fail to be 'diplomatic.'

Royal expert Christopher Andersen, citing the insiders, has claimed that Prince William has sparked concerns inside the palace because of his fiery temper.

The expert says that Prince William’s fiery temper has sparked tensions behind palace walls.

The future king has been warned by the royal insiders that William's confrontational instincts could become problematic once he becomes the monarch.

The close insider said, "There is anxiety in some royal circles that William can become intensely emotional and reactive when frustrated. The monarchy depends heavily on diplomacy, patience and self-control, and people around him know those qualities will be tested even more once he is king."

The palace aide said, "William is deeply passionate and protective, but that intensity can sometimes spill over into anger behind closed doors."

The insider further said: "William feels an enormous weight of responsibility and sometimes that pressure manifests itself emotionally. There have been moments where advisers felt he needed help managing stress and channeling his anger more constructively, and have advised that he should attend anger management therapy."

In his book, the expert further claims Prince William is generally respectful toward palace staff and strangers and never directs his temper toward his wife, Kate Middleton and their children Prince George, Princess Charlotte, and Prince Louis.

However, he claimed William has repeatedly raised his voice during arguments with King Charles.