David Rubenstein explaining to Forbes why he hired A-list rainmakers like Jim Baker, John Major and George H.W. Bush at his private-equity giant Carlyle Group to help impress investors. Washington’s unassuming billionaire is on the magazine’s latest cover.

Earlier: David Rubenstein, co-founder of Carlyle Group and Washington philanthropist, 5/14/12

Washington billionaires: Who are they, how do they spend it?, 3/9/12

More Reliable Source: Romney flag pin; Chris Brown; Jay Sean; Xtina, celebvocate; Chris Cooley