Few politicians have endured a more dramatic fall from grace than Sir Keir Starmer. Less than two years ago, he was celebrating a landslide general election victory and was seemingly set to dominate British politics for years to come. Now he has been ejected from power by his own party and instead of ushering in a "decade of national renewal," as he had promised, he is contemplating a return to the back benches. In an emotional resignation speech, delivered at a lectern outside his Downing