Israel's war in Gaza grinds on, but opposition is growing. In recent weeks, thousands of Israeli reservists – from all branches of the military – have signed letters demanding that Prime Minister Benjamin Netanyahu's government stop the fighting and concentrate instead on reaching a deal to bring back the remaining 59 hostages being held by Hamas. Eighteen months ago, few Israelis doubted the war's logic: to defeat Hamas and return the hostages. For many, the January ceasefire and...