JERUSALEM -- The United Nations Human Rights Council endorsed a report that alleges possible war crimes by both Israel and Hamas during the December-January Gaza War, despite a last-minute diplomatic push by Israeli Prime Minister Benjamin Netanyahu.

The report, by South African jurist Richard Goldstone, calls for both sides to conduct investigations of allegations or face referral to war-crimes tribunals. Such an outcome is highly unlikely, however, since any final U.N. stamp of approval for such a move would have to be made...