In the first phase of the Iranian Army's retaliatory strike, it fired more than 100 ballistic missiles at Israel, resulting in serious damage to the capital Tel Aviv. It seems that the Iranian side has found an opportunity to regroup before Israel after a very difficult day.
The Iranian Army's retaliatory strike is important because it must be demonstrated that, despite the killing of leading generals, the hierarchical structure of the armed forces continues and that it maintains its operational power. Otherwise, a revolt by lower-ranking officers will be inevitable. Back in 1921, in the power vacuum created by the fall of the Qajar dynasty, Reza Khan, supported by the British, entered the capital Tehran with 3-4 thousand troops, seized power and laid the foundation of the Pahlavi dynasty. Of course, it is still too early to talk about a revolt in modern Iran, but it is among the possible scenarios.
Another important aspect of Iran's retaliatory strike is that the attack was limited to Israel. However, for Iran, the shelling of the Gulf could have more serious consequences. It seems that the Iranian leadership still wants to avoid a regional war. Most likely, the Iranian side has one eye on the negotiating table with the United States.
The Israeli side has stated that in the event of counterattacks, Iran's economic infrastructure will be targeted. That is, the scale of the war may increase. But I think it is more likely that the United States will intervene again to defuse tensions...