Gibraltar has freed an Iranian oil tanker suspected of breaching international sanctions,... despite U.S. authorities' attempts to prevent its release.<br />The British territory's supreme court approved the release of Grace 1 which was detained by the country six weeks ago.<br />Gibraltar said it was assured by Tehran that the tanker's cargo would not be taken to Syria, which would violate EU sanctions.<br />Amid frosty relations between Washington and Tehran,... the U.S. State Department reportedly intervened in order to prevent the tanker from being released.<br />It's speculated a swap deal has been made between the UK and Iran,... as Tehran seized a British ship in the Gulf a few weeks after Grace 1 was seized.<br />
