With not one but two ceasefires now holding across the Middle East, could the region be on the verge of two significant diplomatic breakthroughs? The pauses in fighting — one involving Iran and another in Lebanon — are both being described as fragile, which is often the case with such arrangements. Still, as the sound of combat subsides, a window has opened that carries both promise and peril. At first glance, Thursday night’s declaration of a 10-day halt in hostilities between Israel and the