"(c) Letter dated 16 September 1982 from the Permanent Representative of Lebanon to the United Nations addressed to the President of the Security Council (S/15392)" Y Resolution 520 (1982) of 17 September 1982 The Security Council, Having considered the report of the Secretary-General of 15 September 1982,40 Condemning the murder of Bashir Gemayel, the constitutionally elected President-elect of Lebanon, and every effort to disrupt by violence the restoration of a strong, stable government in Lebanon, Having listened to the statement by the Permanent Representative of Lebanon, 41 Taking note of the determination of Lebanon to ensure the withdrawal of all non-Lebanese forces from Lebanon, I. Reaffirms its resolutions 508 ( 1982), 509 (1982) and 516 ( 1982) in all their components; 2. Condemns the recent Israeli incursions into Beirut in violation of the cease-fire agreements and of Security Council resolutions; 3. Demands an immediate return to the positions occupied by Israel before 15 September 1982, as a first step towards the full implementation of Security Council resolutions; 4. Calls again for the strict respect of the sovereignty, territorial integrity, unity and political independence of Lebanon under the sole and exclusive authority of the Government of Lebanon through the Lebanese Army throughout Lebanon; 5. Reaffirms its resolutions 512 (1982) and 513 (1982), which call for respect for the rights of the civilian populations without any discrimination, and repudiates all acts of violence against those populations; 6. Supports the efforts of the Secretary-General to implement resolution 516 ( 1982), concerning the deployment of United Nations observers to monitor the situation in and around Beirut, and requests all the parties concerned to cooperate fully in the application of that resolution; 7. Decides to remain seized of the question and asks the Secretary-General to keep the Security Council informed of developments as soon as possible and not later than within twenty-four hours. Adopted unanimouslv ar tht· 2395th meeting. Decision At its 2396th meeting, on 18 September 1982, the Council decided to invite the representatives of Algeria, Democratic Yemen and Greece to participate, without vote, in the discussion of the question. 4" Ibid., document S/15382/Add.l 41 /hid., Thirty-seventh Year, 2W4th meeting. Resolution 521 (1982) of 19 September 1982 The Security Council, Appalled at the massacre of Palestinian civilians in Beirut. Having heard the report of the Secretary-General42 at it~ 2396th meeting, Noting that the Government of Lebanon has agreed to the dispatch of United Nations observers to the sites of greatest human suffering and losses in and around that city, I. Condemns the criminal massacre of Palestinian civilians in Beirut; 2. Reaffirms once again its resolutions 512 ( 1982) and 513 (1982), which call for respect for the rights of the civilian populations without any discrimination, and repudiates all acts of violence against those populations; 3. Authorizes the Secretary-General, as an immediate step, to increase the number of United Nations observers in and around Beirut from ten to fifty, and insists that there shall be no interference with the deployment of the observers and that they shall have full freedom of movement; 4. Requests the Secretary-General, in consultation with the Government of Lebanon, to ensure the rr October. Nm·emher and neccmher /<}82 10