In the summer of 1945, as it became clear that the British were not planning on establishing a Jewish state and would not allow significant Jewish immigration to Palestine, Jewish public opinion shifted decisively against the British, and the Jewish authorities sent feelers to the Irgun and Lehi to discuss an alliance. The end result was the Jewish Resistance Movement, a framework under which the Haganah, Irgun, and Lehi launched coordinated series of anti-British operations. For several months in 1945–46, the Irgun fought as part of the Jewish Resistance Movement. Following Operation Agatha, during which the British arrested many Jews, seized arms caches, and occupied the Jewish Agency building, from which many documents were removed, Begin ordered an attack on the British military and administrative headquarters at the King David Hotel following a request from the Haganah, although the Haganah's permission was later rescinded. The King David Hotel bombing resulted in the destruction of the building's southern wing, and 91 people, mostly British, Arabs, and Jews, were killed.