THE DAUGHTER of the Iranian general assassinated in an American drone strike on Friday has warned Donald Trump that the US will soon face a “dark day”.

Streets in Tehran were packed with mourners for the funeral of General Qasem Soleimani yesterday.

Iran’s state news service said millions had turned up to pay their respects.

Zeinab Soleimani said in a eulogy for her father that the United States and Israel faced retaliation.

“You crazy Trump, the symbol of ignorance, the slave of Zionists, don’t think that the killing of my father will finish everything,” she said.

There is little sign of tensions easing following the attack, and fears of a conflict in the middle east are growing.

Iran has already said it will no longer abide by a 2015 agreement to suspend uranium production.

Trump yesterday doubled down on his threat to attack Iran’s historic cultural sites, despite such an act being a war crime.

The President and other American officials believe Soleimani was planning attacks on United States forces when he was killed.

However, he has been urged to declassify the document that the administration sent to Congress formally giving notice of the airstrike.

It is reportedly unusual for an administration to classify the entirety of such a notification. Democrats believe the document, required by law, is insufficient.

In a joint statement, Senator Chuck Schumer of New York, the Democratic leader; and Senator Robert Menendez of New Jersey, the top Democrat on the Foreign Relations Committee, said it was “critical that national security matters of such import be shared with the American people in a timely manner”.

They added: “An entirely classified notification is simply not appropriate in a democratic society, and there appears to be no legitimate justification for classifying this notification.”

In Iraq, the government is considering whether to adopt a motion passed by the parliament to expel foreign troops from the country.

Downing Street yesterday said Boris Johnson had spoken to his counterpart in Baghdad, urging him to keep British coalition forces in the country to continue operations against the Daesh terror group.

The Iraqi Prime Minister, Adel Abdul Mahdi, had been due to meet with Soleimani on the morning he was killed.

The drone strike that killed Soleimani also killed Abu Mahdi al-Muhandis, the deputy head of the Popular Mobilization Forces, a coalition of Iranian-backed militias in Iraq.

The attack has been viewed by many in Iraq as a violation of the nation’s sovereignty.

There are around 400 UK and 5200 US troops in Iraq. Military chiefs here fears that their withdrawal would revitalise Daesh.

A Number 10 spokeswoman said Johnson and Mahdi “discussed the need to de-escalate tensions in the region following the death of Qasem Soleimani and agreed to work together to find a diplomatic way forward”.

“The Prime Minister underlined the UK’s unwavering commitment to Iraq’s stability and sovereignty and emphasised the importance of the continued fight against the shared threat from Daesh,” they added.

Earlier on Sunday, Trump tweeted that the United States had selected 52 Iranian sites, some “at a very high level & important to Iran & the Iranian culture” to attack in the event of Iranian retaliation.

That prompted the Iranian foreign minister, Mohammad Javad Zarif, to say that “targeting cultural sites is a war crime”. But on Sunday evening, aboard Air Force One on his way back from his holiday trip to Florida, Trump did not back down.

“They’re allowed to kill our people,” he said to reporters. “They’re allowed to torture and maim our people. They’re allowed to use roadside bombs and blow up our people. And we’re not allowed to touch their cultural site? It doesn’t work that way.”

Downing Street has sought to distance itself from Trump’s threat, pointing to existing laws.

“There are international conventions in place that prevent the destruction of cultural heritage,” the Prime Minister’s official spokesman told a Westminster briefing.

The spokesman also insisted Britain’s security partnership with the US remained “very close” despite Trump not informing the UK of the US’s plans.