 Complete the following phrase:  Hundreds of thousands of Holocaust survivors were being held in Displaced Persons Camp DP Camps aching to go to Mandatory Palestine. The British received much international pressure, specifically from U.S. president Harry Truman, to change their policy on immigration. Despite Britains dependence on American economic aid, the British refused, claiming that they were experiencing too much resistance from the Arabs and Jews already in Palestine and feared what would happen if more were allowed to enter. The refusal to remove the white paper policy angered and radicalized the Yishuv. The Yishuvs militia groups set out to sabotage the British infrastructure in Palestine and continue in their illegal immigration efforts. In 1946, the British responded to the Yishuvs efforts and began a two-week search for Jews suspected of anti-British activities, arresting many of the Haganahs leaders. While the British were busy looking for the Haganah, the Irgun and Lehi carried out attacks on British forces. The most famous of their attacks was on the 