A major crisis among the Arab nationalists took place with the failed establishment of the Arab Kingdom of Syria in 1920. With the disastrous outcome of the Franco-Syrian War, the self-proclaimed Hashemite kingdom with its capital in Damascus was defeated and the Hashemite ruler took refuge in Mandatory Iraq. The crisis saw the first confrontation of nationalist Arab and Jewish forces, taking place in the Battle of Tel Hai in March 1920, but more importantly the collapse of the pan-Arabist kingdom led to the establishment of the local Palestinian version of Arab nationalism, with the return of Amin al-Husseini from Damascus to Jerusalem in late 1920.