FILE - In this Feb. 15, 2012 photo, an Israeli bulldozer works at the site where Israel builds a barrier along the border with Egypt in southern Israel. The number of Africans slipping into Israel from Egypt's Sinai desert has dropped dramatically from about 1,000 a month in recent months to 268 in July 2012, with the government crediting a soon-to-be-completed border fence and a new, get-tough policy of detaining migrants who show up at the Israeli border. (AP Photo/Diaa Hadid, File)