Abu Musa (called Abu Musa in Arabic by UAE and Jazireh-ye Abu Musa in Persian by Iran) is situated at the mouth of the narrows of the Strait of Hormuz.
Carried out studies show that in 1000 BC., Abu Musa island was administered by Iranians like other islands of Pars Sea (Persian Gulf) and was a part of Iranian territory.
Between the years (1165-1151 AH.) Pars Sea and Abu Musa were under the dominance of Elomates.
In Parthians (Arsacides) era and in the time of Mehrdad the First (138-171 BC.), Abu Musa was under the dominance of this Iranian dynasty.
In Sasanid time (another Iranian dynasty), these islands were a part of Iranian territory and in time of Omavian and Abas ian caliphate, ports and islands of the Persian Gulf were managed by their envoys.
In the year 323 AD., Emadoldole Daylami, occupied the ports and islands of the Persian Gulf including Abu Musa. In the reign of Al-Bouyeh, all ports and islands of the Persian Gulf annexed to their territory.
This island was under Kerman Saljoughian rule till 538 AH., and was managed by local government of Bani Ghaisa. Taymur Gurkan annexed the ports and islands of the Persian Gulf to his territory.
In 1147 AH., Karim Xane Zand ruled over the ports and islands of the Persian Gulf. Aqa Mohamad Xane Qajar ruled over all of these areas as well.
In the reign of Shah Abbas Safavid, Portuguese conquered Abu Musa island. Initially the Portuguese who came to the gulf in the late 15th century after Vasco da Gama's discovery of the route to India via the Cape of Good Hope.
In the late 18th century, with entrance of British naval force and her political citizens to the Persian Gulf in the pretext of expelling pirates, preventing slavery and safeguarding the sea routes to India, British Naval Force stopped Iranian military operations in Abu Musa.
In January 1968, Britain announced that it would withdraw all of its forces from east of Suez by the end of 1971. At that time the sheikhdom of Sharjah, now part of the United Arab Emirates (UAE) controlled Abu Musa.