Following assassination of physicist, officials in Tehran assert 'dear unassuming scientist' was involved in various important projects on virus and military defense

Khamenei calls for 'punishing the perpetrators,' says Fakhrizadeh's scientific work will continue

Iran's supreme leader suggests Islamic Republic can't rely on new US administration despite Biden pledge to reenter 2015 nuclear accord

In apparent message to Biden administration, US secretary of state says lifting sanctions would 'weaken new partnerships for peace in the region' and only benefit Tehran

Bipartisan task force of lawmakers from US, Israel, Australia, Canada and UK hear recommendations for actions they can take to address issue, hold big tech accountable

'What a spectacle!' goads supreme leader, noting the president says the election is rigged, while Biden claims the incumbent intends to widely cheat

'It’s lovely to watch,' goads supreme leader, noting the president says the election is rigged, while Biden claims the incumbent intends to widely cheat

Supreme leader mum on upcoming elections; Iranian radio broadcast presidential debates live; US officials accuse Islamic Republic of sending emails to US voters

Iranian supreme leader questions why it is a criminal act to 'raise doubts' about genocide of Jews, calls Macron’s support for caricatures a ‘stupid act’

But spokesperson says Twitter does not allow 'attempts to deny or diminish such events' as Jack Dorsey questioned by Republicans about why some posts removed while others remain