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Dubai, Jan 6: Iran announced a further rollback of its commitments to the troubled international nuclear accord Sunday amid anger over the US killing of a top commander which also prompted Iraq's parliament to demand the departure of American troops.

While vast crowds gathered in Iran's second city of Mashhad as Qasem Soleimani's remains were returned home, the Tehran government said it would forego the "limit on the number of centrifuges" it had pledged to honour in the 2015 agreement which was already in deep trouble.

The announcement was yet another sign of the fallout from Friday's killing of Soleimani in Baghdad in a drone strike ordered by President Donald Trump, which has inflamed US-Iraqi relations and among the rival camps in Washington.

Iran's 2015 nuclear accord with the United Nations Security Council's five permanent members -- Britain, China, France, Russia and the United States -- plus Germany has been hanging by a thread since the US withdrew unilaterally from it two years ago.

European countries have been pushing for talks with Iran to salvage the deal, inviting Iranian Foreign Minister Mohammed Javad Zarif to Brussels for talks, but the prospect of progress seemed remote after the government's statement on Sunday night.

"Iran's nuclear programme no longer faces any limitation in the operational field", said the statement.

This extends to Iran's capacity for enriching uranium, the level of enrichment carried out, the amount enriched, and other research and development, it said.

"As of now Iran's nuclear programme will continue solely based on its technical needs," it added.

Europe urges Iran to rethink

Until now, Iran has said it needs to enrich uranium up to a level of five percent to produce fuel for electricity generation in nuclear power plants.

Tehran said it would continue cooperating "as before" with the International Atomic Energy Agency but the leaders of Germany, France and Britain reacted by urging Iran to rethink its announcement.

"We call on Iran to withdraw all measures that are not in line with the nuclear agreement," Chancellor Angela Merkel, President Emmanuel Macron and Prime Minister Boris Johnson said in a joint statement.

The European leaders also urged Iran to refrain from taking "further violent actions or support for them."

"It is crucial now to de-escalate. We call on all the players involved to show utmost restraint and responsibility."

The Europeans have been among the chorus of voices urging restraint in the aftermath of the drone strike which killed Soleimani, the veteran commander of the Revolutionary Guards' foreign operations.

But as his remains were paraded through the streets of Mashhad, cries of "Revenge, Revenge" echoed through the streets while mourners threw scarves onto the roof of the truck carrying his coffin.

Soleimani's remains had been returned before dawn to the southwestern city of Ahvaz, where the air resonated with Shiite chants and shouts of "Death to America".

Some 5,200 US soldiers are currently stationed across Iraqi bases to support local troops preventing a resurgence of the Islamic State jihadist group.

But the government could be poised to demand they leave after a vote in the Baghdad parliament where caretaker prime minister Adel Abdel Mahdi joined 168 lawmakers -- just enough for quorum -- to discuss a motion to force US troops.

"The parliament has voted to commit the Iraqi government to cancel its request to the international coalition for help to fight IS," speaker Mohammed Halbusi announced.

The cabinet would have to approve any decision but the premier indicated support for an ouster in his speech.

'Iraqi people want the US'

US Secretary of State Mike Pompeo reacted by saying he would "take a look at what we do when the Iraqi leadership and government makes a decision" but indicated that he felt American troops were still welcome.

"We are confident that the Iraqi people want the United States to continue to be there to fight the counterterror campaign," Pompeo said on Fox News.

Two rockets hit near the US embassy in Baghdad late Sunday, the second night in a row that the Green Zone was hit and the 14th time over the last two months that US installations have been targeted.

Pompeo defended the decision to kill Soleimani while insisting that any further US military action against Iran would conform to international law.

Trump triggered accusations that he had threatening a war crime by declaring cultural sites as potential targets in a Tweet on Saturday night.

Zarif drew parallels with the Islamic State group's destruction of the Middle East's cultural heritage following Trump's tweets that sites which were "important to... Iranian culture" were on a list of 52 potential US targets.

"We'll behave lawfully," Pompeo told the ABC network.

House Speaker Nancy Pelosi has been leading the backlash against the Soleimani strike, an operation that Trump only officially informed Congress about after the event.

But Trump made light of the calls for him to get Congressional approval in the future, saying such notice was "not required" -- and then saying his tweet would serve as prior notification if he did decide to strike against Iran again.

"These Media Posts will serve as notification to the United States Congress that should Iran strike any US person or target, the United States will quickly & fully strike back, & perhaps in a disproportionate manner," Trump wrote.

Dubai/Washington, Jan 6: Tens of thousands of Iranians thronged the streets of Tehran on Monday for the funeral of Quds Force commander Qassim Suleimani who was killed in a US air strike last week and his daughter said his death would bring a "dark day" for the United States.

"Crazy Trump, don't think that everything is over with my father's martyrdom," Zeinab Suleimani said in her address broadcast on state television after US President Donald Trump ordered Friday's strike that killed the top Iranian general.

Iran has promised to avenge the killing of Qassim Suleimani, the architect of Iran's drive to extend its influence across the region and a national hero among many Iranians, even many of those who did not consider themselves devoted supporters of the Islamic Republic's clerical rulers.

The scale of the crowds in Tehran shown on television mirrored the masses that gathered in 1989 for the funeral of the founder of the Islamic Republic, Ayatollah Ruhollah Khomeini.

In response to Iran's warnings, Trump has threatened to hit 52 Iranian sites, including cultural targets, if Tehran attacks Americans or US assets, deepening a crisis that has heightened fears of a major Middle East conflagration.

The coffins of the Iranian general and Iraqi militia leader Abu Mahdi al-Muhandis, who was also killed in Friday's attack on Baghdad airport, were passed across the heads of mourners massed in central Tehran, many of them chanting "Death to America".

One of the Islamic Republic's major regional goals, namely to drive US forces out of neighbouring Iraq, came a step closer on Sunday when the Iraqi parliament backed a recommendation by the prime minister for all foreign troops to be ordered out.

"Despite the internal and external difficulties that we might face, it remains best for Iraq on principle and practically," said Iraqi caretaker Prime Minister Adel Abdul Mahdi, who resigned in November amid anti-government protests.

Iraq's rival Shi'ite leaders, including ones opposed to Iranian influence, have united since Friday's attack in calling for the expulsion of US troops.

Esmail Qaani, the new head of the Quds Force, the Revolutionary Guards' unit in charge of activities abroad, said Iran would continue Suleimani's path and said "the only compensation for us would be to remove America from the region."

ALLIES AT FUNERAL

Prayers at Suleimani's funeral in Tehran, which will later move to his southern home city of Kerman, were led by Iran's Supreme Leader Ayatollah Ali Khamenei. Suleimani was widely seen as the second most powerful figure in Iran behind Khamenei.

The funeral was attended by some of Iran's allies in the region, including Ismail Haniyeh, the leader of Palestinian group Hamas who said: "I declare that the martyred commander Suleimani is a martyr of Jerusalem."

Adding to tensions, Iran said it was taking another step back from commitments under a 2015 nuclear deal with six major powers, a pact from which the United States withdrew in 2018.

Washington has since imposed tough sanctions on Iran, describing its policy as "maximum pressure" and saying it wanted to drive down Iranian oil exports - the main source of government revenues - to zero.

Talking to reporters aboard Air Force One on the way to Washington from Florida on Sunday, Trump stood by his remarks to include cultural sites on his list of potential targets, despite drawing criticism from US politicians.

"They're allowed to kill our people. 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 sites? It doesn't work that way," Trump said.

Democratic critics of the Republican president have said Trump was reckless in authorizing the strike, and some said his comments about targeting cultural sites amounted to threats to commit war crimes. Many asked why Soleimani, long seen as a threat by US authorities, had to be killed now.

Republicans in the US Congress have generally backed Trump's move.

Trump also threatened sanctions against Iraq and said that if US troops were required to leave the country, Iraq's government would have to pay Washington for the cost of a "very extraordinarily expensive" air base there.

He said if Iraq asked US forces to leave on an unfriendly basis, "we will charge them sanctions like they've never seen before ever. It'll make Iranian sanctions look somewhat tame."