Husayni served as Secretary of the Palestinian Arab Action Committee (1921-1934) and the Muslim Supreme Council. He was founder and chairman of the Palestine Arab Party and its delegate to the Arab Higher Committee, led by his brother, Amin al-Husayni. During the Great Arab Revolt he escaped first to Syria (1937) and then to Baghdad, Iraq (1939). He led the Arab delegation to the 1939 London Round Table Conference and was Palestinian representative to the Anglo-American Committee of Enquiry. Husayni was arrested by the British in 1941 and exiled to Southern Rhodesia. He was released at the end of World War II and returned to Palestine in 1946. He was an unofficial delegate to the United Nations in 1947-48. In September-October 1948 he was the foreign minister in the Egyptian-sponsored Government of All-Palestine.
- Gelber, Yoav (1997). Jewish-Transjordanian Relations 1921-48: Alliance of Bars Sinister. London: Routledge. ISBN 0-7146-4675-X