The inexorable march towards WW-III. When we will stumble and tumble into it - God only knows.
Israel attacked Iran because it perceived the regime to be at its weakest now, and herself in the strongest position.
The whole Middle East has a strong tribalist mindset, however much rich it may be - it is rooted in their history. Morally speaking, Israel need not have attacked Iran, but it was paranoid about Iran's eventual future power and antagonistic mindset.
The political machinery of the Ayatollahs made itself hated enough amongst a significant section of the population - this section still has memories of how much better economically they were, how good their science and arts were and regarded by the others. So many other unfortunate families were on the receiving end. Otherwise why would there be so many people willing to betray the regime? The regime is reaping what it sowed.
Iran won't surrender. It cannot conduct precision and effective strikes against Israel without causing significant civilian deaths. So IRGC's strikes will cause civilian deaths. They will block the Strait of Hormuz, the Houthis will attack the ships. So this will be a pretext for larger strikes against Iran. Notice how Israel stopped striking the Iranian oil refineries - directly harming the economic lifeline of civilians is a strict no-no.
USA under Trump has proved itself to be an unreliable story-teller.
For the US it was a great opportunity to remove Chinese and Russian ties with Iran. Except Iran, the whole of ME is in their pocket. They could not afford to have an antagonistic Iran, one that was close to the superpower-in-waiting. So regime change is the way to go.
How will the Chinese react? Russia? Will they be able to make the ME Islamic countries undertake actions inimical to American and Jewish interests? This is a recipie for further chaos.
About Pakistan, what do we say about its supine military leadership and its pathetic civilian leaders - the less said the better.
However there are ominous signs for India. The Pakistani Army will against create unrest in Jammu and Kashmir. We will again react. US will be distracted and unwilling to stop Pakistan since its support for controlling any crisis in the ME is important. Additionally, its good for the US to see us tied up against Pakistan and less able to grow economically. A prolonged conflict will damage us significantly.