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Mahmoud Abbas is a Palestinian politician who has been the President of the Palestinian National Authority (PNA) since 2005. He previously served as the PLO Negotiations Affairs Department leader from 1993 to 2003. Abbas is a member of Fatah and has been involved in the Palestinian national movement since the 1950s. He was a key figure in the PLO's negotiations with Israel in the 1990s and early 2000s.