Kammala wannan magana: A farkon 1962, an canja Harrop (a kan Sheldon B. Vance's request) zuwa Ofishin Harkokin Afirka, inda yake da alhakin al'amuran tattalin arziki a Congo (sa'an nan a tsakiyar Cold War-era
Congo Crisis) da kuma rabuwa da Katanga. A cikin 1963, Harrop ya tafi Brussels don zama jami'in tattalin arziki na tsakiya da kuma mataimakin kwamishinan tattalin arziki na kasa da kasa.