Iran’s supreme leader has warned the government would not “back down,” as rights groups fear the communications blackout in place could presage a brutal crackdown.

Tehran threatened on Sunday to retaliate against Israel and U.S. military bases in the event of U.S. strikes on Iran, issuing the warning as Israeli sources said Israel was on high alert for the possi...

Videos posted on BBC Persian Television showed thousands of people on the march in the capital, Tehran, drawing supporters from what residents said in interviews was a demographically diverse cross-se...