Hamas militants have released four female Israeli soldiers they held captive for 15 months in a planned exchange for 200 Palestinian prisoners or detainees in Israel. It’s the second exchange since a fragile ceasefire took effect last weekend. It has halted the fighting in Gaza for at least six weeks during which dozens of Israeli hostages and hundreds of Palestinian prisoners will be freed while more aid flows in. In return for the four soldiers released Saturday, Israel should free 200 Palestinian prisoners or detainees, including 120 militants serving life sentences after being convicted of deadly attacks.