Royal expert says Prince Harry risks "lobbing a grenade" at Prince William; Kate Middleton brings back Princess Diana's famous tiara. (Neil Mockford/Getty Images; Aaron Chown - WPA Pool/Getty Images)

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FAULT LINES - Prince Harry risks ' lobbing a grenade ' at Prince William as chance to heal yearslong feud emerges: expert

'OLD FAITHFUL' - Kate Middleton brings back Princess Diana's famous tiara for glamorous night alongside Prince William

Prince William, Prince of Wales and Catherine, Princess of Wales arrive for a state banquet at Windsor Castle, Windsor, on Oct. 20, 2026.…