Queen Elizabeth II, the U.K.’s longest-serving monarch, has died at Balmoral aged 96, after reigning for 70 years. The formal body overseeing the succession from Queen Elizabeth II will meet from 10 a.m., with a first public pronouncement from a balcony of St James's Palace in London at 11 a.m. LONDON Liz Truss pays tribute to ‘great leader’ Queen Elizabeth …