The Israeli military says it has opened criminal probes of two of its most publicized killings of Palestinian civilians during the summer’s assault on Gaza. Investigators will examine the killing of four Palestinian children on a Gaza beach and a later attack that killed 14 people in a U.N. school, one of several hitting U.N. shelters. At least 2,100 Palestinians, more than 75 percent civilian, were killed in the Israeli assault. Critics say Israel is seeking to deflect international scrutiny, including a United Nations Human Rights Council probe and potential cases before the International Criminal Court.