Iraq’s parliament called on Sunday for US and other foreign military forces to leave amid a growing backlash against the US killing of Iranian military commander Qassem Soleimani that has heightened fears of a wider West Asia conflict.

US secretary of state Mike Pompeo said Washington would target any Iranian decision-makers it chose if there were further attacks on US interests by Iranian forces or their proxies.

As Washington and Tehran, longtime foes, assailed each other with threats and counter-threats, the European Union, Britain and Oman urged them to make diplomatic efforts to defuse the crisis.

The Iraqi parliament passed a resolution calling on the government to work to end all foreign troop presence, reflecting the concern of many in Iraq that the strike could engulf them in a major war between two bigger powers long at odds in Iraq and across the region.

“The Iraqi government must work to end the presence of any foreign troops on Iraqi soil and prohibit them from using its land, air space or water for any reason,” it said.

Parliamentary resolutions, unlike laws, are non-binding to the government. But this one is likely to be heeded: Prime Minister Adel Abdul Mahdi, who heads a Shia-led government, had earlier called on the parliament to end foreign troop presence as soon as possible.

Some 5,000 US troops remain in Iraq, most in an advisory role.

Trump tweeted on Saturday that Iran “is talking very boldly about targeting certain USA assets”.

He said the US had “targeted 52 Iranian sites”, some “at a very high level & important to Iran & the Iranian culture, and those targets, and Iran itself, WILL BE HIT VERY FAST AND VERY HARD”.

In remarks to Fox News on Sunday, Pompeo said Trump had not threatened to target Iranian cultural sites.

Earlier on Sunday, Iran lambasted Trump.

“Like ISIS, Like Hitler, Like Genghis! They all hate cultures. Trump is a terrorist in a suit. He will learn history very soon that NOBODY can defeat ‘the Great Iranian Nation & Culture’,” information and telecommunications minister Mohammad Javad Azari-Jahromi tweeted.

Hundreds of thousands of mourners, many chanting, beating their chests and wailing in grief, turned out across Iran to show their respects after Soleimani’s body was returned home to a hero’s welcome.

Sayyed Hassan Nasrallah, leader of Lebanon’s powerful, Iran-allied Hezbollah movement, said the US military in West Asia would pay the price for Soleimani’s death and US soldiers and officers would return home in coffins.