After the Occupation of Constantinople by the Allies of World War I, he began serving for the newly founded Turkey. He served in Bern, Bucharest, Budapest, and Beirut. After 1929 he was appointed as the secretary general of the Ministry. He was a brilliant diplomat and he participated in such negotiations like the Straits ıssue (Treaty of Montreux) and Hatay ıssue (Hatay Republic). He went into politics and was elected as the Republican People's Party MP from Gaziantep Province. Between 9 July 1942 and 16 June 1944, in the 13th and the 14th government of Turkey, he was appointed as the Foreign Minister of Turkey. His term coincides with the Second World War. After politics, he resumed his diplomatic mission and was appointed as the ambassador to Paris and then Lisbon.