He had intended the purchase of Lehman Brothers to be "transformational" for Barclays, and for evidence of his success he didn't have to look much farther than just outside the walls that were his windows and the windows that were his walls. It wasn't just that Barclays Capital was now an American bulge-bracket firm in its own right; it wasn't just that out of the integration of Barclays and Lehman Brothers he had built what Jerry del Missier called a "flow monster" that kept capital moving with incredible efficiency. It was that in taking over Lehman Brothers, he had also allowed Barclays to be taken over, in what one Barclays trader called the "goddamnedest reverse takeover you ever saw." The culture at Lehman Brothers was American and aggressive, replete with its "animals" and its "killers," not to mention its jerks and assholes, and while Diamond cherished the culture he had built at Barclays from the beginning, he was willing to put it in play.