Until the First Intifada, Fatah was the sole dominating party in the Palestinian political arena, including the PLO. In 1987, Hamas arose as a resistance movement against the Israeli occupation. Following the Oslo Accords, the PLO, of which Fatah still was the dominant member, formally denounced armed resistance. Hamas refused to recognize Israel and opposed the Oslo Accords and subsequent agreements between the PLO and Israel. Under pressure of Israel and the international community, Fatah attempted to eliminate Hamas, especially after Mahmoud Abbas had succeeded Arafat as President of the Palestinian National Authority. Tensions mounted ahead the Israeli disengagement from Gaza in 2005 and culminated in the Battle of Gaza in June 2007, resulting in a split of the Palestinian government.