More Iranian warships are to be sent to the Gulf of Aden, to protect the fifth-largest crude exporter's oil tankers from pirate attacks. ?The naval units are to be sent to the waterway linking the Red and the Arabian Seas 8:00am local time (12:40 GMT), Monday, the semiofficial Iranian Students News Agency reported on Sunday. ?The warships are to join the existing two unites stationed at the Gulf where international forces from a number of countries including the United States, India, Britain, China, Russia, Saudi Arabia and South Korea have been fighting pirates preying on commercial vessels.