A group that is operating in Gaza and which says it is associated with ISIS has claimed that it killed a top Hamas commander. According to the group, which calls itself the Army of the Islamic State, Saber Siam was killed when ISIS operatives placed a bomb on his car, blowing it up with him inside. Siam was killed, the group said, because he was “a partner in a declared war against religion and against Muslims, working for the heretical government in Gaza.” ISIS warned Hamas to immediately “end its war against religion in Gaza” or “face the consequences.” The...