Israeli historian Efraim Karsh takes the view that the Palestinian identity did not develop until after the 1967 war because the Palestinian exodus had fractured society so greatly that it was impossible to piece together a national identity. Between 1948 and 1967, the Jordanians and other Arab countries hosting Arab refugees from Palestine/Israel silenced any expression of Palestinian identity and occupied their lands until Israel's conquests of 1967. The formal annexation of the West Bank by Jordan in 1950, and the subsequent granting of its Palestinian residents Jordanian citizenship, further stunted the growth of a Palestinian national identity by integrating them into Jordanian society.