Gaza’s future must be Palestinian-led and avoid any new system of tutelage, Turkey and six of its top Muslim allies said on Monday after talks in Istanbul. Turkey, which played a central role in forging the now shaky three-week-old ceasefire, is pushing for Muslim nations to bring their influence to bear on the reconstruction of the embattled territory. “Our principle is that Palestinians should govern the Palestinians and ensure their own security, the international community should support...