Original sentence: Britain, who controlled the sheikdoms that later became the UAE, came to an agreement with Iran that if Iran were to give Bahrain independence, Britain would in turn give up the islands back to Iran.Tehran says they always belonged to it, that they are situated within its territorial waters and are an integral part of Iranian territory.The Greater and Lesser Tunbs (, Tunb-e Buzurg and  Tunb-e Kuchak; , Tunb al-kubra and Tunb al-sughra) are two Iranian islands in the eastern Persian Gulf, close to the Strait of Hormuz.The name of the islands comes from Persian tunb 'hilly place'.The three islands are controlled and administered by Iran, but the UAE claims the islands belong to Sharja, one of the UAE's Sheikdoms, and are occupied by Iran.While Iran existed as a state long before 1971, the UAE as a state was formed in 1971 and had no history as independent state beforehand
Edited sentence: Earlier, there had been negotiations but no final agreement over it between Iran and Great Britain, which acted as a colonial power on behalf of the Arabic Sheikhdoms that later became the UAE.Tehran says they always belonged to it and are integral part of Iranian territory.The Greater and Lesser Tunbs (, Tonb-e Bozorg and  Tonb-e Kuchek; , Tunb al-kubra and Tunb al-sughra) are two Iranian islands in the eastern Persian Gulf, close to the Strait of Hormuz.The name of the islands comes from Persian tonb 'hilly place'.The three islands are controlled and administered by Iran, but the UAE claims the islands belong to Sharja, one of the UAE's Sheikhdoms and were occupied by the Iran.This issue has been disputed especially since 1971, when the UAE were founded