Palestinian President Mahmud Abbas gestures following his speech in front of thousands of Palestinians on the eve of the 48th anniversary of the formation on the Fatah movement, on December 31, 2012, in the West Bank city of Ramallah. The Fatah anniversary commemorates the first operation against Israel claimed by its armed wing then known as Al-Assifa (The Thunderstorm in Arabic) on January 1, 1965. AFP PHOTO/ABBAS MOMANI
Palestinian President Mahmoud Abbas and China's President Xi Jinping attend a signing ceremony at the Great Hall of the People on May 6, 2013 in Beijing, China. Abbas is visiting China from May 5 to 7.
Palestinian President Mahmoud Abbas shakes hands with China's President Xi Jinping during their meeting at the Great Hall of the People on May 6, 2013 in Beijing, China. Abbas is visiting China from May 5 to 7.
Palestinian President Mahmoud Abbas (L) is welcomed by British Prime Minister Gordon Brown at Number 10 Downing Street on January 29, 2010 in London, England. Abbas is visiting Europe where he will meet with the leaders of Britain, Germany and Russia, following his talks with US Special Envoy to the Middle East George Mitchell over the stalled Middle East peace talks.
In this handout photo provided by the Palestinian Press Office (PPO), Palestinian President Mahmoud Abbas (L) and Russian President Vladimir Putin (R) hold a meeting on April 13, 2015 in Moscow, Russia.
Pope Francis (R) meets Israeli President Shimon Peres and Palestinian President Mahmoud Abbas for a peace invocation prayer at the Vatican Gardens on June 8, 2014 in Vatican City, Vatican. Pope Francis invited Israeli President Shimon Peres and Palestinian President Mahmoud Abbas to the encounter on May 25th during his visit to the Holy Land.
Secretary of State John Kerry (L) gestures at the start of a bilateral meeting with Palestinian Authority President Mahmoud Abbas on September 24, 2013 in New York City. Diplomats from around the world have descended on New York for the annual United Nations General Assembly.
Pope Francis meets Palestinian President Mahmoud Abbas also known as Abu Mazen during an audience at the Apostolic Palace on May 16, 2015 in Vatican City, Vatican. The Vatican on Wednesday officially recognized the state of Palestine in a new treaty finalized just days before the Catholic Church is set to declare two 19th century Palestinian nuns as saints.