Four Israeli soldiers have been killed in an explosion in a building in Rafah in the south of the Gaza Strip, according to the Israeli military. The army announced the deaths of the four men, aged between 19 and 24, on Tuesday. According to Israeli media reports, the soldiers had thrown an explosive device into a suspicious three-storey building in Rafah in order to detonate possible booby traps. However, an explosion only occurred when the troops had already entered the building. The building collapsed and buried several soldiers underneath it. Seven soldiers were also injured, some of them s…