Politics Israel Palestine

Oxford professor of international relations Avi Shlaim served in the Israeli army and has never questioned the state's legitimacy. But its merciless assault on Gaza has led him to devastating conclusions

A wounded Palestinian policeman gestures while lying on the ground outside Hamas police headquarters following an Israeli air strike in Gaza City. Photograph: Mohammed Abed/AFP/Getty Images

The only way to make sense of Israel's senseless war in Gaza is through understanding the historical context. Establishing the state of Israel in May 1948 involved a monumental injustice to the Palestinians. British officials bitterly resented American partisanship on behalf of the infant state. On 2 June 1948, Sir John Troutbeck wrote to the foreign secretary, Ernest Bevin, that the Americans were responsible for the creation of a gangster state headed by "an utterly unscrupulous set of leaders". I used to think that this judgment was too harsh but Israel's vicious assault on the people of Gaza, and the Bush administration's complicity in this assault, have reopened the question.

I write as someone who served loyally in the Israeli army in the mid-1960s and who has never questioned the legitimacy of the state of Israel within its pre-1967 borders. What I utterly reject is the Zionist colonial project beyond the Green Line. The Israeli occupation of the West Bank and the Gaza Strip in the aftermath of the June 1967 war had very little to do with security and everything to do with territorial expansionism. The aim was to establish Greater Israel through permanent political, economic and military control over the Palestinian territories. And the result has been one of the most prolonged and brutal military occupations of modern times.