It‘s not immediately clear what triggered Trump‘s dramatic post on Truth Social or his early return from Canada. Israel has been conducting strikes in Tehran since Thursday night, but the U.S. has so far declined to join the operation.

Shortly after Trump‘s post, Iranian media reported explosions and heavy air defense fire in Tehran. It‘s unclear if there was any relation between Trump‘s post and the attack.
Tehran is home to around 10 million people, with around 17 million in the metropolitan area.