By 17 April 1948 the situation in Palestine had deteriorated further and the Security Council adopted Resolution 46 (1948), calling upon all persons and organizations in Palestine to immediately cease all military activities, as well as acts of violence, terrorism and sabotage; to refrain from any actions endangering the safety of the Holy Places in Palestine and refrain from importing or acquiring or assisting or encouraging the importation or acquisition of weapons and war materials (arms embargo). It also requested the government of the U.K., as the Mandatory Power, to supervise the execution of those measures and to keep the Security Council and the General Assembly informed on the situation in Palestine.