The Israeli military suspects munitions or some other combustible substance it was unaware of caused a secondary explosion and a fire to spread in a complex housing displaced Gazans in southern Gaza’s Rafah, killing Palestinian civilians, following an airstrike on two top Hamas terrorists in the area. The military says it had been tracking Hamas commanders Yassin Rabia and Khaled Najjar ahead of the strike on a compound they were in on Sunday night, in the Tel Sultan neighborhood in western Rafah. According to the IDF’s intelligence, the area had been used for Hamas activity, with a rocket launcher just...