Saeb Erakat is the chief of the Palestinian Liberation Organization Steering and Monitoring Committee, from which he negotiated with Israel regarding the Oslo Accords. He first held the post from 1995 until his resignation in protest from the Palestinian government in May 2003. He quickly reconciled with his party, and was reappointed to the post in September 2003.
Erekat has participated in numerous peace negotiations with Israel, including Camp David meetings in 2000, and negotiations at Taba in 2001. He was briefly the Minister of Negotiations in 2003, but he soon resigned after he was not included in a delegation to meet with Israeli Prime Minister Ariel Sharon.
Source - Wikipedia
http://en.wikipedia.org/wiki/Saeb_Erekat