After World War II , as a result of the British policies , the Jewish resistance organizations united and established the Jewish Resistance Movement which coordinated armed attacks against the British military which took place between 1945 and 1946 . Following the King David Hotel bombing ( in which the Irgun blew up the King David Hotel in Jerusalem , the headquarters of the British administration ) , which shocked the public because of the deaths of many innocent civilians , the Jewish Resistance Movement was disassembled in 1946 . The leadership of the Yishuv decided instead to concentrate their efforts on the illegal immigration and began to organize a massive immigration of European Jewish refugees to Palestine using small boats operating in secrecy , many of which were captured at sea by the British and imprisoned in camps on Cyprus . About 70,000 Jews were brought to Palestine in this way in 1946 and 1947 . Details of the Holocaust had a major effect on the situation in Palestine and propelled large support for the Zionist movement
King David Hotel bombing
King David Hotel bombing
History of the Israeli–Palestinian conflict