Three Israeli soldiers were killed when a booby trap exploded in a building in Rafah, Israeli media reported on Wednesday as fighting rages on in southern Gaza despite continuing calls from around the world for Israel to halt the operation immediately. The Israeli army confirmed that three soldiers from the Nahal infantry brigade had been killed in fighting the previous day. During the operation, Israeli soldiers went from house to house in search of weapons, the military said, without elaborating specifically on where or how they died. Local media said it was in a booby-trapped building in Ra…