اتفاقية أوسلو
After returning to the United States, Harrop was informed that he was one of the candidates for Pakistan or Israel. Eventually, Harrop was appointed ambassador to Israel, his final posting; Harrop succeeded William Andreas Brown in the post. He served from January 21, 1992 to May 7, 1993. Important events during Harrop's tenure included the Dotan affair, the recognition of the PLO by Israel for the first time, and the beginning of the talks that led to the Oslo I Accord.