A senior US official told Fox News that an MQ9 Reaper drone was sacked on by the Iranians on Thursday shortly after it arrived at the scene where the MV Altair tanker sent out a distress signal amid the attacks the USA says were perpetrated by Iran. "These accusations are alarming".
Washington, already embroiled in a standoff with Iran over its nuclear program, has blamed Tehran. Iran has denied any role in the strikes south of the Strait of Hormuz, a major transit route for oil.
In a statement, British Foreign Secretary Jeremy Hunt condemned the attacks and said they had violated global norms and called on Iran to stop all forms of "destabilising behaviour".
The British Foreign Office on Saturday said in a statement that it concluded "it is nearly certain that a branch of the Iranian military", the Islamic Revolutionary Guard, attacked the tankers on Thursday.
They do like war. But this has done little to assuage concerns that the two arch foes could stumble into a conflict.
An Iranian small attack craft fired a surface to-air missile (SAM) at a U.S.
Iran fired a missile - but missed - at an American drone on Thursday after the supposed Iranian attack on oil tankers, while another us drone was shot down by Iran-backed rebels in Yemen in recent days.
But he then returned to the issue of building consensus.
"So we obviously need to make contingency plans should the situation deteriorate. We also need to broaden our support for this worldwide situation".
Oil prices have climbed 3.4% since Thursday's attacks. The Houthis said that attack was carried out using a cruise missile.
Iranian-US tensions ratcheted up after Trump pulled out of a deal a year ago between Iran and global powers to curb Tehran's nuclear ambitions in exchange for relief from sanctions.
Iran dismissed Trump's message, details of which were not made public.
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Should the Raptors fail to pull out a victory, they'll play Game 7 at home at Scotiabank Arena in Toronto on Saturday. Following the Warriors' defeat, Durant was one of the first people to get in touch with Klay Thompson .
The Trump administration said in May it would send troops and other forces to the Middle East, citing Iranian threats, a move Tehran has called "psychological warfare". Tehran has denied the charges.
Mr Corbyn tweeted: "Britain should act to ease tensions in the Gulf, not fuel a military escalation that began with USA withdrawal from the Iran nuclear agreement".
The Japanese ship operator of the Kokuka Courageous, one of the vessels attacked, said sailors on board the tanker saw "flying objects" just before the attack, suggesting the vessel wasn't damaged by mines.
China and the European Union called for restraint. In a notable signal that close USA allies are wary of Washington's position, Germany said the United States video was not enough to apportion blame for Thursday's attack.
No other state or non-state actor "could plausibly have been responsible", the statement added. Thursday's attack occured while Japanse Prime Minister Shinzo Abe was in Iran seeking to defuse tensions between Washington and the Islamic Republic.
Sources claimed the explosive fell in the sea and did not harm the drone.
That's putting a desperate Tehran on course to violate its terms of the nuclear deal.
The cause of the blasts on June 13 remains unclear.
The owner of the Japanese tanker, has meanwhile claimed that the United States has provided "false information" about what happened.
The ship's crew saw an Iranian military vessel in the vicinity Thursday night Japan time, Katada said, according to Reuters news agency.
Kokuka Courageous's crew had been rescued by a Dutch tug and the US destroyer Bainbridge by the time the IRGC's patrol boat reached the abandoned ship.