Brothers Prince William and Prince Harry have been locked in a yearslong rift that shows no signs of ending anytime soon. That said, the two are still connected through the memory of their mother, Princess Diana, whose legacy they’re both intent on preserving.

Prince Harry and Prince William still share one value their late mother, Princess Diana, imparted in them, historian Amanda Foreman tells PEOPLE exclusively in this week's issue.

As Prince Harry’s ongoing rift with his estranged brother, Prince William, rages on, one question remains: what would Princess Diana have done? The feuding brothers, who have not maintained contact following the Duke and Duchess of Sussex’s royal exit in 2020,