The first thing that Iranian people need, even before they buy AD (regardless if regime survives or not) are diplomats.
It is rare to see a country whom the enemies are openly attacking at will, while friends of enemies are taking two weeks time to decide if they too want to join the party.
It is rare to see a country whose friends and strategic allies don't even attempt a UNSC meeting to stop the war, let alone supplying anything defensive to protect the people of the country at least.
It's a failure of diplomacy, failure to make deals, and also not having enough feedback from diplomats about the pace in which the bomb should be made.
Even Kim Jong Un, more isolated and ruler of a destitute nation fared better than Iranian Ayatollah powered system.