In Bitar's cabinet, Droubi was made education minister. He was also a member of the National Council for the Revolutionary Command (NCRC), which effectively served as the country's interim parliament. On 3 April, five of the six Nasserist ministers resigned from Bitar's government in protest at the Military Committee's purge of dozens of Nasserist officers. In Bitar's second cabinet, formed in May, Droubi and two other pro-Nasser Ba'athist ministers (Abd al-Karim al-Zuhur and Jamal al-Atassi) were not included. Droubi kept his position in the NCRC and on 19 June was part of a high-ranking delegation that included Bitar, Aflaq and Chief-of-Staff Ziad al-Hariri, the official leader of the 1963 coup, making a state visit to Algeria. During the visit, dozens of Hariri's politically independent loyalists in the officer corps were purged by the Ba'athist's Committee. Soon after Hariri returned to Syria to respond to the purges, he too was dismissed. Droubi remained in Algiers for a while longer, but returned to Syria later that month. Droubi was highly critical of the purges and condemned the lack of progress in restoring the UAR. In September, President Amin al-Hafiz assigned him ambassador to Morocco, until December 1964 when he reassigned as ambassador to Yugoslavia. After al-Hafiz was ousted by far-left elements of the Military Committee led by Salah Jadid in February 1966 and replaced by Nureddin al-Atassi, Atassi appointed Droubi ambassador to Egypt and Syria's representative to the Arab League on 16 April. His nomination was intended to prevent him from having influence over decision-making in Syria where he was a leading voice of opposition to Jadid's "de facto" rule. He condemned the expulsion of Aflaq and Bitar from Syria. When he presented his credentials to Nasser in Egypt, he reportedly wept and stated it hurt him that Egypt and Syria were still not reunited, "as if I were not in one proud day a citizen of the republic in which you were president." Nasser died in September 1970, and Droubi was recalled to Syria in November by President Hafez al-Assad, who ousted and imprisoned Jadid and Atassi. A year later, Droubi was posted to Spain as Syria's ambassador, and then in October 1973, Assad appointed him ambassador to the Holy See of Vatican City.