FILE - In this March 30, 2012 file photo, a Hamas security officer tries to prevent protesters from reaching Erez crossing during a march heading towards the border with Israel in the northern Gaza Strip. (AP Photo/Hatem Moussa, File)

Photo by: Hatem Moussa

FILE - In this March 30, 2012 file photo, a Hamas security officer tries to prevent protesters from reaching Erez crossing during a march heading towards the border with Israel in the northern Gaza Strip. (AP Photo/Hatem Moussa, File)