Protesters chant slogans during a demonstration in solidarity with the Palestinian people in Gaza, near the U.S. embassy in Aukar, a northern suburb of Beirut, Lebanon, Oct. 18, 2023. (Hassan Ammar/AP) The Middle East once again perches on the precipice of all-out war. Thousands of Israeli and Palestinian civilians are dead or wounded, many of them children. More than 200 Israelis and others remain hostages of Hamas in Gaza as that 25-mile-long coastal strip devolves into a humanitarian catastrophe. The U.S. military is sending more ships, planes and Marines, while American forces come under fire in Iraq and Syria and...