Iran fires rockets at IS in Deir az Zor in Syria

Iran's Revolutionary Guard says it has fired several missiles at positions of IS in Syria's Deir Az Zor province in retaliation for two deadly attacks in Tehran earlier this month that were claimed by the armed group.
"Medium-range missiles were fired from the (western) provinces of Kermanshah and Kurdestan, and a large number of terrorists were killed and weapons destroyed," the Guard said in a statement published on its Sepahnews website on Sunday. It said the attack targeted "a command base .. of the terrorists in Deir Ezzor", using a different version of the name for the province in eastern Syria. "The spilling of any pure blood will not go unanswered," it added.
The firing of the missiles, the first in 30 years outside Iran's own territory, came hours after Supreme Leader Ayatollah Ali Khamenei, in a statement on his website, vowed Iran would "slap its enemies" in honour of the victims' families, including those killed in Syria and Iraq. 

The Islamic State (IS) claimed responsibility for the June 7 attacks on Iran's parliament and the Mausoleum of Ayatollah Khomeini that left 17 people dead.
The attack on Khomeini's shrine was symbolically stunning. Khomeini was Iran's revolutionary leader in the 1979 ouster of the shah. Senior Iranian officials had also put the blame for the Tehran attacks on Riyadh, saying Saudi Arabia was "promoting terrorist groups" in Iran.
Iran is a key ally of the Syrian government of President Bashar al-Assad, alongside Russia and the Iranian-backed Hezbollah movement of Lebanon. In March, an official was quoted by Iran's IRNA news agency as saying that about 2,100 combatants sent by Iran have been killed in Syria and Iraq.