Islamic Republic calls attack 'act of aggression,' labels Washington's presence in Syria 'illegal'; airstrike launched in response to drone attack that killed American contractor

Militia fighters reportedly bracing for further possible strikes, day after rockets fired at bases housing American troops following exchange that began with Iranian drone attack

Biden says Washington does not seek conflict with Iran but will 'forcefully' protect personnel in Syria

Treasury Department blacklists several firms and people for alleged role in scheme; official slams Tehran's 'proliferation of UAVs and conventional weapons to its proxies'

Israel and US condemn Brazil for hosting the vessels, saying it was a 'prize' for Tehran that is looking to challenge the West; Biden administration sanctions both ships

William Burns says US doesn't believe Iranian supreme leader has made decision to pursue weaponization, after Tehran found to have enriched uranium to 84% purity

Siamak Namazi calls on Biden to consider plight of captive Americans, accuses successive US presidents of being more concerned with 'political thermometer' than 'moral compass'

Siamak Namazi pens open letter to Joe Biden, urging him to 'set his mind' to freeing him and other hostages, following similar deals sealed by his predecessors Obama and Trump

Tamir Hayman tells UK Jewish News that Israel provided Washington with information showing urgent need to assassinate top Iranian general

Sharp rhetoric from National Security Adviser Sullivan does not indicate a policy change as Washington seeks to isolate Tehran on international stage