IRAN says it's "ready for war" after shooting down a US "spy" drone today as tensions continue to rise in the Persian Gulf.

The Islamic Republic's state-run IRNA news agency has insisted the country's Revolutionary Guard hit the drone when it flew over Iran in a "clear message" to Washington.

But in a shocking twist it was claimed the image Iran used to make the claim is fake - and actually shows a drone being shot down over Yemen two years ago.

12 Iran’s state-run IRNA news agency released this picture - which has now been branded a fake that actually shows a drone being shot down over Yemen two years ago

12 The military drone was gunned down this morning by Iran

The US military challenged Iran's claims saying the drone was gunned down in international airspace over the Strait of Hormuz by an Iranian surface-to-air missile.

Earlier, Navy Captain Bill Urban, of America's Central Command, said: "No US aircraft were operating in Iranian airspace today."

Hossein Salami, the commander of Iran’s Revolutionary Guard, said that Tehran does “not have any intention for war with any country, but we are ready for war" while insisting "our airspace is a red line".

Speaking on Iranian state television, he said this morning's incident sends a “clear message” to the US while issuing a threat to the country's "enemies".

General Salami said: "We warn enemies of any aggression at this stage and assure them that we can reach them wherever they are."

IRNA, citing the paramilitary Revolutionary Guard, identified the drone as an RQ-4 Global Hawk - an unmanned aircraft system (UAS) which can fly at high altitudes for more than 30 hours.

FAKE PHOTO?

When revealing Iran had shot down the drone, the country's state-run IRNA news agency released a picture of an aircraft appearing to spiral towards Earth.

It claimed the image showed a RQ-4 Global Hawk, a US military drone, being blasted out the sky over Iranian territory.

However the same photograph - albeit in a wider crop - had previously appeared in a two-year-old report of a spy drone being shot down over Yemen in 2017.

That report quoted Yemeni military sources as saying it showed an American MQ 9 drone falling to Earth near the country's capital Sanaa - and included pictures of the crashed drone burning on the ground.

It wasn't immediately clear whether Iran mistakenly shared the old image or whether it was a deliberate attempt at spreading misinformation.

12 The same photograph - albeit in a wider crop - had previously appeared in a two-year-old report of a spy drone being shot down over Yemen in 2017

SPY DRONE 'SHOT DOWN'

RQ-4 Global Hawk drones can gather near-real-time, high-resolution imagery of large areas of land in all types of weather, its makers Northrop Grumman says.

IRNA had earlier claimed the drone entered Iranian airspace near the Kouhmobarak district in southern Iran's Hormozgan province.

The reported shoot-down comes amid heightened tensions between Tehran and Washington.

In recent days, the US confirmed an attempt by Iran to shoot down an American drone last week as well as a successful destruction of one on June 6 by Iran-aligned Houthi forces in Yemen

Earlier this week, the US announced plans to deploy more than 1,000 additional troops to the Middle East following bomb attacks on two oil tankers.

The Pentagon released photos which it claims proves Iran's Revolutionary Guard were behind the bomb attacks on the tankers in the Gulf of Oman.

Acting Defence Secretary Patrick Shanahan announced the deployment for what he said were "defensive purposes" citing concerns about a threat from Iran.

TENSIONS RISE

He said the "recent Iranian attacks validate the reliable, credible intelligence we have received on hostile behaviour by Iranian forces and their proxy groups" towards America.

The new images, many taken from a Navy helicopter, show what the Pentagon said were Iranian forces removing an unexploded mine from the side of the Kokuka Courageous tanker.

Other photos show a large hole on the side of the Japanese-owned ship, above the water line, that officials say appears to have been caused by another similar mine.

The vessel is believed to have been targeted by a magnetic mine causing a series of massive explosions.

Recent US and Iran tensions May 5: USS Abraham Lincoln carrier strike group and a bomber task force is deployed in Middle East in response to 'a number of troubling and escalatory indications and warnings' by Iran.

May 8: Iran vows to enrich its uranium stockpile if world powers fail to negotiate new terms for its nuclear deal. The US responds by imposing sanctions on Iran's metals industry.

May 10: The US says it will move a Patriot missile battery into the Middle East to counter threats from Iran.

May 24: President Trump says the US will bolster its military presence in the Middle East with an additional 1,500 troops.

May 12: The UAE says four commercial ships off its eastern coast "were subjected to sabotage operations," just hours after Iranian and Lebanese media outlets air false reports of explosions at a nearby Emirati port.

June 13: Two oil tankers are attacked in the Gulf of Oman - Washington blames Iran while Tehran denies involvement

June 18: US sends more than 1,000 additional troops to Middle East citing Iran's 'hostile behaviour'

June 20: Iran shoots down American 'spy' drone insisting the aircraft had flown over its airspace - a claim the US denied

12 The RQ-4 Global Hawk, a US military drone, can fly at high altitudes for more than 30 hours Credit: Getty - Contributor

Massive oil tanker ‘struck by torpedo’ in the Gulf of Oman near Iran

12 The pictures also show damage to the vessel Credit: Reuters

12 The new images were taken from a US Navy helicopter Credit: AP:Associated Press

12 According to the Pentagon, the Iranians are removing an unexploded mine Credit: AP:Associated Press

12 A satellite picture taken directly above shows the Iranian vessel beside the tanker Credit: AP:Associated Press

12 Secretary of State Mike Pompeo standing in front of pictures of the tankers attacked in the Gulf Credit: AP:Associated Press

12 A huge fire rages on board the Front Altair after it was attacked in the Gulf of Oman

12 An aerial picture showing the huge blaze raging on the oil tanker after the attack Credit: AP:Associated Press

Both it and the Front Altair burst into flames and were forced to evacuate the troubled region.

Iran has denied any involvement in the explosions.

It comes as US Secretary of State Mike Pompeo said the United States is "considering a full range of options" after the attacks.

"We have briefed the President a couple of times, we'll continue to keep him updated," he said.

"We are confident that we can take a set of actions that can restore deterrence which is our mission set," Pompeo said in an interview on CBS's Face The Nation.

When questioned if a military response was one of the options, Pompeo responded: "Of course."

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He then added: "The President will consider everything we need to do to make sure, right? But what's the President said? We don't want Iran to get a nuclear weapon.

"President Trump has said very clearly, he doesn't want to go to war."

And when asked if the administration had the legal authorisation to strike Iran without approval from Congress, Pompeo said: "We always have the authorisation to defend American interests."

Pentagon releases a video which appears to show Iranian boat removing an unexploded mine from one of the attacked oil tankers in the Gulf of Oman

US and Iran - a troubled history Before the 1979 Iranian revolution, Iran was one of America's biggest allies in the Middle East and was led by the US-backed Mohammad Reza Shah Pahlavi.

However, since the seismic revolt, Iran has been led by murderous Islamic fundamentalists and tensions with Washington have remained ever since.

On November 4, 1979, the Iranian regime took 52 US diplomats hostage in response to President Carter’s administration allowing Iran’s deposed former leader into America.

The hostage crisis lasted for 444 days and also included a failed rescue mission which cost the lives of eight US soldiers.

In April 1980, the US ended diplomatic relations with Iran – a break which lasted for more than 30 years.

In April 1983, Washington blamed the Iranian-funded terror group Hezbollah for carrying out a bombing attack on the American embassy in Beirut, Lebanon.

The assault, carried out amid a brutal civil war in Lebanon, killed 17 Americans.

In November of that year, two truck bombs in Beruit killed 241 US peace keepers. The US again blamed Hezbollah for the incident.

The Clinton White House, in 1995, placed a total embargo on Iran meaning US companies could not trade with the country.

And in 2002, George W Bush included the Islamic Republic in his famous “Axis of evil” speech along with North Korea and Iraq.

It was also revealed the US Navy is sending the guided missile destroyer USS Mason to the scene of the attacks.

The deployment of extra troops is part of a broader military package of options that were initially laid out to US leaders late last month.

They include many as 10,000 personnel, Patriot missile batteries, aircraft and ships.

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The Royal Navy is also set to send Marines to the region amid rising tensions.

The attacks came as tensions in the Persian Gulf between the United States and Iran reach boiling point.

In recent weeks, Washington has deployed an aircraft carriers and B-52 bombers to the region in response to what it says are Iranian threats against American interests and its allies in the region.

12 The shocking attacks happened in the Gulf of Oman - a key trade route in the Middle East

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