** FILE ** Palestinian President Mahmoud Abbas (left) greets Jean Asselborn (right), Luxembourg's foreign minister, as Riyad Mansour, Palestinian observer to the United Nations, looks on during a summit on the Millennium Development Goals at United Nations headquarters in New York on Tuesday, Sept. 21, 2010. (AP Photo/David Karp)

Photo by: David Karp

** FILE ** Palestinian President Mahmoud Abbas (left) greets Jean Asselborn (right), Luxembourg's foreign minister, as Riyad Mansour, Palestinian observer to the United Nations, looks on during a summit on the Millennium Development Goals at United Nations headquarters in New York on Tuesday, Sept. 21, 2010. (AP Photo/David Karp)