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Does Iranian law green light encounters with US warships?

The legal arguments underpinning US and Iranian views on the Law of the Sea should not be overlooked as tensions once again mount over the passage of US military vessels through the Strait of Hormuz.
One of the five military vessels from Iran's Revolutionary Guard Corps that approached a U.S. warship hosting one of America's top generals on a day trip through the Strait of Hormuz is pictured in this July 11, 2016 handout photo.  U.S. Navy/Handout via REUTERS  ATTENTION EDITORS - THIS IMAGE WAS PROVIDED BY A THIRD PARTY. EDITORIAL USE ONLY - RTSHLRW

TEHRAN, Iran — Tensions appear to be mounting again in the Strait of Hormuz, as seen in a video released by the US military Aug. 23. The footage shows four patrol boats operated by Iran’s Islamic Revolutionary Guard Corps (IRGC) approaching a US destroyer in the narrow waterway. US military officials say two of the patrol boats came within 300 yards of the destroyer USS Nitze. A series of similar incidents were reported the following day with one encounter resulting in the US ship firing warning shots. Earlier, on July 12, US media had reported five IRGC speedboats coming within close proximity of a US ship in the Persian Gulf.

The Pentagon has described the actions of the Iranian naval vessels last month as “unsafe and unprofessional.” Iranian Defense Minister Hossein Dehghan, however, defended the movements of the IRGC patrol boats, stating, “Preserving the country’s security at sea and in the Persian Gulf is our responsibility. It is natural that these boats would be continuously monitoring the traffic of foreign vessels in Iran’s territorial waters.” Were the Iranian boats, however, acting in accordance with domestic and international laws?

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