Trump has brilliantly weakened Iran to a point where armed protesters (backed by US and Israeli drones and airstrikes) in Tehran could overrun security forces.
An armed uprising in Tehran is the ideal place to start a civilian revolt because if the regime loses control of Tehran it will cause a domino effect across the rest of the country.
In addition, once Tehran is lost the regime would be unlikely to get it back because to regain control they would need to send sizable regime reinforcements to the city; forces that would be highly vulnerable to US and Israeli airstrikes.
The last piece is, therefore, to get as many handguns, assault rifles and ammunition into the hands of as many Iranian citizens in Tehran (and elseswhere) as possible, either through airdrops from cargo planes, land routes, both, or some other method.
Since conscription is mandatory in Iran, most of the male population of fighting age likely has, at least, intermediate level training in handling firearms. They simply need the US and Israel to get guns in their hands ASAP and be supported by drones and air power to takeover Tehran and trigger the collapse of the regime.
Pragmatically Distributed 