Iranian Supreme Leader Ayatollah Ali Khamenei, left, openly weeps as he leads a prayer over the coffin of General Qassem Soleimani, who was killed in Iraq in a US drone strike on Friday. Picture: Iran Press TV via AP

Washington/Dubai – Iran’s supreme leader wept in grief with hundreds of thousands of mourners thronging Tehran’s streets on Monday for the funeral of military commander Qassem Soleimani, killed by a US drone on the orders of US President Donald Trump.

As the coffins of General Qassem Soleimani and Iraqi militia leader Abu Mahdi al-Muhandis, who also died in Friday’s attack in Baghdad, were passed over the heads of mourners, Soleimani’s successor vowed to expel U.S. forces from the region in revenge.

The killing of Soleimani, the architect of Iran’s drive to extend its influence across the Middle East, has stoked concern around the globe that a broader regional conflict could erupt.

Trump has listed 52 Iranian targets, including cultural sites, that could be hit if Iran retaliates with attacks on Americans or U.S. assets, although U.S. officials sought to play down the president’s reference to cultural targets.

Mourners attend a funeral ceremony for Iranian Gen. Qassem Soleimani and his comrades, who were killed in Iraq in a US drone strike on Friday, at the Enqelab-e-Eslami (Islamic Revolution) square in Tehran, Iran. Picture: Ebrahim Noroozi/AP

General Esmail Ghaani, the new commander of the Quds Force, the elite unit of Iran’s Revolutionary Guards charged with overseas operations, promised to “continue martyr Soleimani’s cause as firmly as before with the help of God, and in return for his martyrdom we aim to rid the region of America”.

“God the Almighty has promised to take martyr Soleimani’s revenge,” he told state television. “Certainly, actions will be taken.”