Palestinian supporters of Hamas gather during a rally to celebrate the 25th anniversary of the militant group Hamas, in the West Bank city of Nablus, Thursday, December 13, 2012. Hamas supporters rallied in the first display of force by the Islamic militant group in the West Bank since it overran Gaza from the Western-backed party of Palestinian President Mahmoud Abbas in 2007. (AP Photo/Nasser Ishtayeh)
Palestinian supporters of Hamas gather during a rally to celebrate the 25th anniversary of the Hamas militant group, in the West Bank city of Nablus, Thursday, Dec. 13, 2012. Hamas supporters rallied in the first display of force by the Islamic militant group in the West Bank since it overran Gaza from the Western-backed party of Palestinian President Mahmoud Abbas in 2007. (AP Photo/Nasser Ishtayeh)