Iran accuses U.S. of "cherry picking" in its interpretation of transit passage rights through the Strait of Hormuz
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Iran maintains that the careful balance of rights and duties reflected in UNCLOS are available only as a specific condition of agreement of the package deal. Since the regime of transit passage is a quid pro quo for acceptance of other terms of the treaty, states not party to UNCLOS, such as the United States, are not entitled to exercise transit passage in the Strait of Hormuz. To permit the United States to enjoy transit passage is to indulge Washington in the very type of “cherry picking” among the provisions of UNCLOS that the package deal was designed to prevent. The regime of transit passage is reserved only for parties to UNCLOS.
While the regime of transit passage in Part III of UNCLOS should have been the last word on the Strait of Hormuz, it is not. Iran and the United States are not parties to the Convention. For its part, the United States pledged, even before the end of the Third United Nations Confer￼ence that it opposed the treaty, but only due to Part XI on seabed mining (which itself subsequently was revised in an implementing agreement in 1994 to satisfy U.S. and other developed states’ concerns).171 Iran never ratified the treaty either, however, so the Iranian-American bilateral rela- tionship in the Strait is not governed by the terms of the treaty.
Iran has frequently threatened to close the Strait of Hormuz in retaliation for adverse sanctions or military action. Ratifying UNCLOS would nullify Iran’s challenges should it ever choose to close the strait to U.S. or other flagged ships. Moreover, ratifying LOSC will provide the U.S. Navy the strongest legal footing for countering an Iranian anti-access campaign in the Persian Gulf.