Two oil tankers were targeted in the Gulf of Oman. The Japanese foreign ministry says the vessels were carrying "Japan-related" cargo. All crew members were safely rescued.
The origins of the attacks in the Gulf of Oman remain a mystery, but the message behind the attack is as clear as day.
This isn’t the first time one of the world’s most strategically-important stretches of water has seen clashes. We take a look at other incidents that have destabilised the Persian Gulf.
Baghdad is attempting to maintain strong diplomatic relations with both the US and Iran as the two rival nations ramp up tensions in the region.
US Secretary of State Mike Pompeo also said that Washington would continue to exert pressure on Iran to change its behaviour. In response, Tehran has rebuked Pompeo's comments.
The request was rejected by President Vladimir Putin on concerns that S-400 missile sale to Tehran may stoke further tensions in the Middle East, Bloomberg said in a report.
US National Security Advisor John Bolton arrived in UAE to discuss "regional security matters" amid escalating tensions between Washington and Tehran.
In recent weeks, tensions between Washington and Tehran soared over America deploying an aircraft carrier and B-52 bombers to the Persian Gulf over a still-unexplained threat it perceives from Tehran.
"Increased US presence in our region is very dangerous and a threat to international peace and security and must be confronted," Iranian Foreign Minister Mohammad Javad Zarif told the official IRNA news agency.
Oman's goodwill and relationships with the Muslim world and the West could prove vital, as they have historically, to ensuring that US-Iran tensions don't boil over.
The warning relayed by US diplomatic posts from the FAA underlined the risks the current tensions pose to a region crucial to global air travel. It also came as Lloyd's of London warned of increasing risks to maritime shipping in the region.
Qatar is trying to "defuse escalating tensions" across the Persian Gulf, Al Jazeera reports amid allegations of oil tanker sabotage, a drone attack by Yemen's Iranian-allied rebels and deployment of US warships and bombers to the region.
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