Masked Palestinian boys wearing a fake explosive belt and one of them holding a real handgun participate in a memorial organized by Hamas for the late Hamas spiritual leader Sheik Ahmed Yassin, on the poster at left, Friday March 26, 2004. Yassin was killed by an Israeli missile strike last Monday in Gaza City.(AP Photo/Nasser Ishtayeh)

A Palestinian boy rides his tricycle past Hamas graffiti in Jabalya refugee camp in the Gaza Strip March 26, 2004. Palestinians accused the United States of granting Israel a license to kill by vetoing U.N. condemnation of its assassination of Hamas leader Sheikh Ahmed Yassin. Photo by Mohammed Salem/Reuters