Prince Harry and Prince William’s brotherly relationship has suffered since the Sussexes moved to America. But according to a royal expert, it seems the siblings are willing to "thrash it out" at an upcoming reunion.The Queen’s Platinum Jubilee year has put pressure on Harry to make amends with both William and dad Charles – but will it happen? Katie Nicholl told the Birmingham Mail: “Harry will want to be a part of the celebratory weekend, and will almost certainly be required to appear with William at that time.