Editor
LONDON — With columns of Scots and Irish guards, throngs of Union Jack-clad admirers and waves of aircraft roaring overhead, Queen Elizabeth II celebrated 70 years on the throne Thursday, earning tributes from world leaders and ordinary people for one of history’s great acts of constancy.
Shortly before 1 p.m., the queen stepped out onto the balcony of Buckingham Palace to greet a sea of well-wishers, stretching down the Mall toward Trafalgar Square. She stood at the helm of four…
