"Petraus also has a teaching gig at University of Southern California (USC) [26] and a day job working at the Wall Street firm [27]Kohlberg Kravis Roberts (KKR) [27]. ???He is expected to advise on economic trends, issues with foreign governments and other matters that could affect transactions,??? The Wall Street Journal explained of his hiring at KKR [27]. ???He will advise firms owned by KKR in" . . . .