As a result of air strikes of Israel on Iranian facilities in Syria killed at least 27 people.
Another reason for the change is the fact that Iran is now isolated from the world in everything related to Syria, and the worldwide community's support for the Israeli airstrikes in the Arab country further stressed Iran's isolation.
"The holy system of the Islamic Republic will step up its missile capabilities day by day so that Israel, this occupying regime, will become sleepless and the nightmare will constantly haunt it that if it does anything foolish, we will raze Tel Aviv and Haifa to the ground", he said, according to state television. "Many understand that the focus on exporting terrorism and developing nuclear weapons is using up the resources of tens of millions of residents who need to live", he said.
Israel had said its strikes on Thursday were in response to a barrage of Iranian rockets on its positions in the occupied Golan Heights, the most serious military confrontation between the two bitter enemies to date. While Israel claims Iran launched first, it says most of the 20 missiles Iran fired failed.
The initial report, which did not include the number of Iranian casualties, was updated "due to the death of wounded or missing persons whose deaths have been confirmed", the observatory's director Rami Abdel Rahman said.
"It's nearly as though [Israel] is saying, 'Now that that announcement is made and we know that Iran is supporting Hezbollah ... that it's fair game to hit Iran inside Syria, '" Alvi told ThinkProgress, referring to the largely Shia Lebanese force present in Syria and fighting alongside Iran and Russian Federation in support of Assad's troops. Four were shot-down by Israel's "iron dome" interception system. Iran's proxy ally Hezbollah possesses 140,000 rockets aimed at Israel, including guided missiles capable of hitting strategic targets and population centres. "You can come, you can return to the bed and breakfasts, to tour, to hike", he said.
"The Iranians tried to attack Israel's sovereign territory", Israeli Defense Minister Avigdor Lieberman charged.
Israel has repeatedly signaled alarm over Iran's presence in Syria, saying Iran is attempting to establish a permanent military presence in Syria to attack Israel as the civil war there winds down.
As it had said it would, Iran finally retaliated on Wednesday.