Millions of black-clad mourners on Monday flocked into Tehran in a procession as part of the funeral of the late supreme leader Ali Khamenei, but controversial remarks by United States President Donald Trump have sparked a fierce backlash, threatening his fragile pledge of restraint amid high tensions.

As hundreds of thousands of mourners turn out onto the streets of Tehran, US President Donald Trump said he was surprised to see Iranians crying, suggesting they were “fake tears”.

Hundreds of thousands of mourners gathered in Tehran on Saturday as Iran began days of funeral ceremonies for the late Supreme Leader Ayatollah Ali...

Dressed in black and draped in the red, white and green flags of the Islamic Republic of Iran, mourners held up posters and A4 printed sheets with pictures of Khamenei and his son…