ɪn ɐdˈɪʃən tə hɪz ˌækədˈɛmɪk kɚɹˈɪɹ, hiː hɐz sˈɜːvd ɪn ɐ nˈʌmbɚɹ ʌv fˈɔːɹən pˈɑːlɪsi pəzˈɪʃənz ɪn dˌɛməkɹˈæɾɪk ɐdmˌɪnɪstɹˈeɪʃənz.
In addition to his academic career, he has served in a number of foreign policy positions in Democratic administrations.