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

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

Pentagon announces retaliatory strikes against IRGC-linked groups in eastern Syria following deadly Deir Ezzour assault

Local activist collective says building hit used as base for Iran’s paramilitary Revolutionary Guard; state media claims blast caused by mine 'left by terrorists'

At annual conference, Atomic Energy Commission chief Moshe Edri says Tehran and Damascus are deceiving IAEA

Dozens have died within weeks and cases mount into the hundreds; contaminated Euphrates river, a vital source for five million people, is a major source of bacteria

Washington hoping Iran will back off after Wednesday exchange of fire, including bombings to destroy rocket launchers used to target American troops in Deir Ezzour

US military launches counter-attack after taking rocket fire from Afghan Shi'ite group said backed by Tehran, US officials tell Reuters

Foreign ministry strongly condemns 'terrorist act' by Washington; activist group claims bombed facility belonged to Afghani fighters backed by Islamic Revolutionary Guard

Attack in Deir Ezzor province carried out in response to drone attack on al-Tanf base by Iran Revolutionary Guards, Pentagon says