Conflicting reports emerged Sunday regarding the fate of top Hamas military commander Ahmed Ja'abri, who may have been killed in one of the hundreds of Israeli air strikes against Hamas infrastructure in the Gaza Strip. Since Operation Cast Lead began on Saturday, the air force has flown over 300 sorties over the Strip, bombing close to 280 different targets. Palestinian and Israeli sources said that Ja'abri, the overall commander of Hamas's armed wing, Izaddin Kassam, may have been killed in an air strike on a mosque which he frequented. Sources close to Hamas in the Gaza Strip said they could...