The United Nations Emergency Force (UNEF) was a military and peacekeeping operation established by the United Nations General Assembly to secure an end to the Suez Crisis of 1956 through the establishment of international peacekeepers on the border between Egypt and Israel. Approved by resolution 1001 (ES-I) of 7 November 1956, UNEF was developed in large measure as a result of efforts by UN Secretary-General Dag Hammarskjöld and a proposal from Canadian Minister of External Affairs Lester B. Pearson, who would later win the Nobel Peace Prize for it. The General Assembly had approved a plan submitted by the Secretary-General which envisaged the deployment of UNEF on both sides of the armistice line; Egypt accepted receiving the UN forces, but Israel refused it. In May 1967, Egypt asked that UNEF leave Egypt; as the troops started to evacuate over the next days, Israel invaded Egypt on 6 June 1967, initiating the Six-Day War and causing the death of one Brazilian Sergeant and 14 Indian peacekeepers – 17 other members of UNEF were also injured. The last member of UNEF left Egypt on 17 June. The UN General Assembly later established a Second United Nations Emergency Force in 1973 in response to the Yom Kippur War. History The first UN military force of its kind, UNEF's mission was to: ... enter Egyptian territory with the consent of the Egyptian Government, in order to help maintain quiet during and after the withdrawal of non-Egyptian forces and to secure compliance with the other terms established in the resolution ... to cover an area extending roughly from the Suez Canal to the Armistice Demarcation Lines established in the Armistice Agreement between Egypt and Israel. UNEF was formed under the authority of the General Assembly and was subject to the national sovereignty clause, Article 2, Paragraph 7, of the U.N. Charter. An agreement between the Egyptian government and the Secretary-General, The Good Faith Accords, or Good Faith Aide-Memoire, placed the UNEF force in Egypt with the consent of the Egyptian government. Since the operative UN resolutions were not passed under Chapter VII of the United Nations Charter, the planned deployment of a military forces had to be approved by Egypt and Israel. Israel's Prime Minister refused to restore the 1949 armistice lines and stated that under no circumstances would Israel agree to the stationing of UN forces on its territory or in any area it