The Palestinian Declaration of Independence formally established the State of Palestine, and was written by Palestinian poet Mahmoud Darwish and proclaimed by Yasser Arafat in Algiers, Algeria. Despite the 1988 proclamation of the State of Palestine, at the time the Palestine Liberation Organization did not exercise control over any territory. The PLO began to exercise a limited rule in the Areas A and B of the West Bank and part of the Gaza Strip as a consequence of the 1994 Gaza-Jericho Agreement. In 2012, Palestine was upgraded to the status of non-member observer state in the UN.