"The guided missile destroyer USS Mahan had an unprofessional interaction with an Islamic Revolutionary Guard Corps Navy (IRGCN) vessel while transiting the global waters of the Arabian Gulf, April 24", the statement said.
This unusually tense incident was not the first of its kind in the Persian Gulf.
During this particular hostile incident between the U.S. Navy and the Iranian military, the approaching vessels came with 900 yards of the USS Mahan.
The strait is a narrow waterway, connecting the Persian Gulf to the Indian Sea, through which a fifth of the world's oil supply passes.
The Associated Press reported the Mahan made a number of attempts to contact the incoming Iranian vessel by radio, issuing warning messages and twice sounding the internationally recognized signal for danger: five short blasts with the ship's whistle. The vessel later turned and sailed away.
The USS Mahan did not fire warning shots but attempted bridge-to-bridge communication, to which they did not receive a response from the Iranian vessel.
Since the Iranian nuclear deal was signed, the United States Navy has documented an increasing number of hostile incidents with the Islamic Revolutionary Guard Corps Navy. The Navy recorded 35 instances of what it describes as "unsafe and/or unprofessional" interactions with Iranian forces in 2016, compared to 23 in 2015. The report also said the American crew fired flares and sounded sirens to warn off the Iranian crew.
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