Caught in the crossfire of the United States and Israel's war with Iran, America's allies in the Persian Gulf face a stark choice: maintain their defensive posture or join the fight against the Islamic Republic. Iran has fired thousands of drones and missiles at US military and diplomatic facilities and damaged key energy infrastructure in Saudi Arabia, the United Arab Emirates (UAE), Qatar, Bahrain, and Kuwait since the war began on February 28. By choking off the Strait of Hormuz, a major artery for global oil and gas supplies, Tehran has also…