from Jewish currents, written about Ariel Sharon, but relevant:
"We are so used to depicting the Jewish culture as peaceful, and imagining Jews as victims, that we forget that a strain of militarism runs through Jewish history. Three times in our ancient and/or mythical history, Jewish generals have waged wars of conquest: the original conquest of Canaan; the war by David using the troops of Israels enemies to dethrone King Saul; and the civil war in which the ultra-religious under the Maccabees wrested control of ancient Israel. (One could build a case that the revolt against British authority after World War II marked a fourth such war of conquest.) Many Jews look to Jewish religious documents to justify these wars, and the justification has always reduced to the same idea: God gave the land of Israel to the Jews. Archeology has demonstrated, however, that the justifications were mostly written after the wars ended. After all, the histories of wars are usually written by the winners.
Being in a constant state of siege transforms even the most inherently humanistic of societies, and modern Israel has faced constant warfare since its inception as a democratic homeland for the Jews. Defenders of the state have always made a moral distinction between Israelis and the enemy, taking the high ground by virtue of religious texts, Israels existence as a democracy, and an almost smug belief in the moral essence of Jewish society and leadership. Uncritical defenders trust that this moral essence prevents Israel from waging anything other than a just war.
The Israel Defense Force (IDF) proclaimed this moral high ground with its Purity of Arms principle, one of the ten values of IDFs basic doctrine: The soldier shall make use of his weaponry and power only for the fulfillment of the mission and solely to the extent required; he will maintain his humanity even in combat. The soldier shall not employ his weaponry and power in order to harm non-combatants or prisoners of war, and shall do all he can to avoid harming their lives, body, honor and property. But even a cursory readings of Arik will unearth enough incidents of civilian casualties, collateral damage, and outright brutality to put the lie to the Purity of Arms concept. Just as the principle of American exceptionalism has been used to justify the moral right of the U.S. to wage wars of aggression, so has the Israeli government and society bolstered its continued preference for violence over negotiation with a Jewish version of exceptionalism. Its easy for a nation at war for more than seventy years, with a near-universal military draft and career soldiers dominating government, to delude itself about its conduct during wars, but the acts speak for themselves."
http://jewishcurrents.org/ariel-sharon-israeli-militarism-29261