There was a lot of disorganization and non-cooperation on the Jewish side as well. The main Jewish army was the Haganah; however, the Stern Gang and Irgun were other Jewish militant groups. The groups had conflicting ideals (for example: the Haganah was willing to internationalize Jerusalem in order to have a unified, peaceful state, but Jerusalem was of the utmost importance to the Stern Gang and the Irgun), but they managed to retain more organization and cooperation than the Arab armies. In the main text of O Jerusalem!, it is related that the Stern Gang and the Irgun massacred the Arab village of Deir Yassin, outraging Arabs. The Haganah denounced the massacre, but the Arabs believed the Haganah to be responsible and retaliated at the Jewish kibbutz of Kfar Etzion.