The Arab-Israeli conflict in modern history is simply an illegal Jewish occupation of the Palestinian lands in two stages. The first stage was in 1948; they occupied 78% of the Arab-Palestinian lands and established their state, Israel. The second stage was in 1967. Israel launched an offensive war against the Arabs and occupied the rest of the Palestinian lands, which consisted of the West Bank (including East Jerusalem) and the Gaza Strip.
Until 1988, Palestinians attempted to regain their land by legitimate military struggle, by establishing the PLO and a number of other fighting groups.
In 1988, the Palestinians, in order to come to a practical solution to their situation, accepted a large compromise by recognizing Israel's fictitious right to exist in Palestinian lands, stolen in 1948, however still demanding the end of the Israel's occupation of the Palestinian lands captured in 1967, allowing the establishment of a Palestinian state there.
The Palestinians, in order to have their freedom and to end the occupation of the lands, attempted different strategies including diplomacy, peace talks and public protest. The Intifada is another way to protest the continued occupation.
Regardless of all the approaches and after the compromise from the Palestinians, Israeli has not ended their occupation of the Palestinian lands captured in 1967. Parts of the Gaza Strip and West Bank have been granted severely limited autonomy under the control of the Palestinian National Authority, as part of a peace agreements signed after 1993.
The only way to end the 100 years of conflict is, Israel should comply with International law and to UN resolutions related to the Arab-Israeli conflict (194, 242 and others), which consider the Israeli occupation of Palestinian lands in stolen 1967 as illegal, stipulating Israel must end it's occupation. By ending the occupation and solving the issues caused by it, such as Palestinian refugees issue and the issue of Israel settlement in West Bank and Gaza Strip, and giving the Palestinian there legitimate right to rule themselves in their own country, to decide for themselves, to take care of there own future and to have their FREEDOM, then the Palestinian-Israeli conflict will be over