Tehran announced it was closing the Strait of Hormuz Sunday and launched missiles and drones at its Gulf neighbors, in retaliation for new US strikes following an attack by Iranian forces on a merchant vessel that was abandoned in flames by its crew.Sirens and explosions were heard in Qatar, the United Arab Emirates and Bahrain, AFP journalists and local authorities reported, the latest escalation to undermine an interim agreement between Washington and Tehran aimed at ending the Middle East…