Iran have issued another grave message following their threat to President Donald Trump in the aftermath of the death of their Supreme Leader.

The military conflict in Iran has now entered its 12th day. Iran’s Supreme Leader, Ali Khamenei, was killed by joint US and Israeli strikes last week, with the Middle Eastern country quickly responding with strikes of its own.

Trump has repeatedly put pressure on Iran to end the conflict, while refusing to rule out sending in U.S ground troops. Meanwhile, the world economy, not least the oil market, has been hugely shaken up.

Speaking with CBS News, Trump confidently claimed earlier this week: “I think the war is very complete, pretty much.

“They have no navy, no communications, they’ve got no air force. Their missiles are down to a scatter. Their drones are being blown up all over the place, including their manufacturing of drones. If you look, they have nothing left. There’s nothing left in a military sense.”

When Trump threatened serious consequences if Iran doesn’t fully re-open the Strait of Hormuz – the Islamic Republic previously declared the Strait of Hormuz, a vital sea lane for oil exports from countries including Iraq, Kuwait, and Saudi Arabia, “closed”, warning that they would attack any ships attempting to pass through – the nation hit back with a threat of its own.

As reported by The Mirror, Ali Ardashir Larijani, secretary of the Supreme National Security Council, said, “The Ashura nation of Iran is not afraid of your empty threats. Even those greater than you could not eliminate the Iranian nation. Be careful not to be eliminated!”

The post was then signed: “Supreme National Security Council of Iran, Tehran, March 19, 1404 – 10 days after the martyrdom of His Holiness Grand Ayatollah Seyyed Ali Khamenei.”

Iran also appeared to send a message to the world that revealed its thoughts on surrendering to US and Israeli demands that it abandon its nuclear project.

Reaffirming its unwavering allegiance to new Supreme Leader Mojtaba Khamenei, son of the late Ali Khamenei, Iran fired a fresh wave of drones and missiles yesterday, March 9.

One such missile was shown on Iranian state TV, having been inscribed with the text: “At your service, Sayyid Mojtaba.”

Trump has previously gone on record to state that any supreme leader elected in Iran would not ‘last long’ if they were not approved of by the US.

The POTUS told Republican allies before a press conference on Monday: “We have won in many ways. But we haven’t won enough.”

The Independent, citing sources, say an estimated 1,245 Iranian civilians and as many as 3,000 Iranian military personnel have been killed in the conflict so far.

Seven U.S. service personnel are also reported to have lost their lives.