The rising tension between Prince Harry and Prince William has beenbuilding up for years. While many believe that Meghan Markle’s entrance into the royal family was the beginning of the rift for the brothers, the truth is there are surely many reasons why the two have grown apart, with William’s future succession to the throne likely to cause a rift between the brothers soon or later — an outcome their mother, Princess Diana would likely have done her best to avoid. Royal expert Robert Jobson spoke to Us Weekly about what Lady Di’s reaction would be at her sons’ feud, and the steps she would take to put an end to it.