With the end of World War II and British refusal to cancel the 1939 White Paper's restrictions on Jewish immigration, the Haganah turned to sabotage activities against the British authorities, including bombing bridges, rail lines, and ships used to deport illegal Jewish immigrants, as well as assisting in bringing Jews to Palestine in defiance of British policy. After the United Nations adopted a partition plan for Palestine in 1947, the Haganah came into the open as the biggest fighting force among Palestinian Jews, successfully overcoming Arab forces during the civil war. Shortly after Israel's independence declaration and the beginning of the 1948 Arab–Israeli War, the Haganah was dissolved and became the official army of the state.