“Two Iranian navy warships arrived Saturday morning in Port Sudan, in the second such visit to Sudan within two months, eyewitnesses and officials said. ‘These visits by Iranian navy warships to Sudan come in the framework of routine exercises by navy forces of friendly nations,’ Col. Khaled Saad al-Sawarmy, the official spokesman for the Sudanese armed forces, told CNN.”

Source: Iranian warships dock again in Sudan – CNN.com