The United States accepted this clarification by Arafat and began to allow diplomatic contacts with PLO officials. The Proclamation of Independence did not lead to statehood, although over 100 states recognised the State of Palestine. Oslo Accords In 1993, the PLO secretly negotiated the Oslo Accords with Israel. The accords were signed on 20 August 1993, with a subsequent public ceremony in Washington D.C. on 13 September 1993 with Yasser Arafat and Yitzhak Rabin. The Accords granted Palestinians the right to self-government in the Gaza Strip and the city of Jericho in the West Bank through the creation of the Palestinian Authority. Yasser Arafat was appointed head of the Palestinian Authority and a timetable for elections was laid out. The headquarters of the PLO were moved to Ramallah on the West Bank. History and armed actions Early actions The PLO began their militancy campaign from its inception with an attack on Israel's National Water Carrier in January 1965. The group used guerrilla tactics to attack Israel from their bases in Jordan (including the West Bank), Lebanon, Egypt (Gaza Strip), and Syria. The most notable of what were considered terrorist acts committed by member organizations of the PLO were: The 1970 Avivim school bus massacre by the Democratic Front for the Liberation of Palestine (DFLP), killed nine children, three adults and crippled 19. In the late 1960s and early 1970s, the Popular Front for the Liberation of Palestine, the second-largest PLO faction after al-Fatah, carried out a number of attacks and plane hijackings mostly directed at Israel, most infamously the Dawson's Field hijackings, which precipitated the Black September crisis. In 1972, the Black September Organization carried out the Munich massacre of Israeli Olympic athletes. In 1974, members of the DFLP seized a school in Israel and killed a total of 26 students and adults and wounded over 70 in the Ma'alot massacre. The 1975, Savoy Hotel hostage situation killing 8 hostages and 3 soldiers, carried out by Fatah. The 1978, Coastal Road massacre killing 37 Israelis and wounding 76, also carried out by Fatah. War of Attrition From 1967 to September 1970 the PLO, with passive support from Jordan, fought a war of attrition with Israel. During this time, the PLO launched artillery attacks on the moshavim and kibbutzim of Bet Shean Valley Regional Council, while fedayeen launched numerous attacks on Israeli forces. Israel raided the PLO camps in Jordan, including