The U.S. responded with an initiative to form an global coalition to protect commercial vessels.
The official said that Iran had placed the jammers at that location in an attempt to disrupt civilian aircraft and ship navigation systems, hoping ships or planes will mistakenly wander into Iranian waters or airspace while their GPS systems were not functioning properly, giving Iranian forces the pretext needed to seize them.
The warning was delivered in a statement that also cited an advisory from the Transportation Department's Maritime Administration.
"(The) Persian Gulf is a vital lifeline and thus nat'l security priority for Iran, which has long ensured maritime security", Zarif said in his tweet.
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The United Arab Emirates and Saudi Arabia, which support USA policy against Iran, have called on the worldwide community to safeguard maritime trade and security of global oil supplies.
If Iranians demand to board, the agency added, "the ship's Master should, if the safety of the ship and crew would not be compromised, decline permission".
Tensions between Washington and Tehran - Saudi Arabia's arch foe - have soared since US President Donald Trump pulled Washington out of a nuclear deal with Iran past year and imposed punishing sanctions.
"The Persian Gulf security relates to the countries of the region which have common interests, and not to the US".
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Earlier on Friday, Iranian Foreign Ministry Spokesman Abbas Mousavi warned that Israeli presence in the Persian Gulf is a clear threat to the national security and that Iran reserves the right to defend itself. President Donald Trump claimed the USA warship took out an Iranian drone about a month after the Revolutionary Guards shot down a US drone in the Persian Gulf region.
The Iranian President has said it can't be that the Strait of Hormuz is free for the British but the Strait of Gibraltar is not free for Iran.
During the past several months, Iran has seized several oil tankers near the Gulf's Strait of Hormuz, in addition to being accused of sabotaging a number of other vessels.
The federal agency said US commercial vessels should take certain precautions, including a review of security measures and ensuring Automatic Identification System is transmitting at all times. On August 6, Israel confirmed its readiness to join the coalition, added TASS.
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