The regieme change in Iraq resulted in an estimated 122,000 civilian deaths. Israel and. the USA do not respect civilian life, nor international law. It is also clear that the Trump attack was not based on firm evidence, just as Sadam Hussain did not have weapons of mass destruction. There is also no evidence that the bombs were successful in destroying the nuclear complexs hit.
Interesting phone in where a scientist said that tthe centrefuges needed to enrich uranium would cost £500 each! So Iran can build new processing facilities relatively easily. So all Trump will have done is to increase the likelyhood of Iran creating a nuclear bomb; and crucially by withdrawing from the nuclear deal with Iran and now bombing it, will have increased the possibility of a bamb being used.
I need to reiterate that Iran’s government is not a nice democratic one according to the model I have been indoctrinated (correctly I believe!) with. But there are many that also would not pass my test (including our own at times). But destroy the Republican Guard and ISIS and other fanatics will quickly fill the vacuum – as happened in Libya, Iraq, and possibly Syria.
Iran does not need to fire huge number of missiles – just threaten boats going through the Gulf – which is a very long way!

The Arabian Gulf (also known as the Persian Gulf) is approximately 615 miles (990 kilometers) long. It stretches from the Shatt al-Arab in the northwest to the Strait of Hormuz in the southeast. Its width varies, ranging from 210 miles (340 km) to 35 miles (55 km) at the Strait of Hormuz. Oil prices are also going through the roof. Iran could relatively easily cut off 20% of the worlds oil supply, or at least make it difficult. Oil has gone up $10 a barrel today.
Who would line up with Iran? Perhaps more pertinently is who will stand against them? This will pan out over the next few weeks.