So I've been doing some reading on Afghanistan recently, and I found that there were two occassions when their former King, Zahir Shah could have returned the monarchy, once in the 1990s at the end of soviet occupation, several groups wanted him back, but because Pakistan's ISI feared his position on the Durand Line they removed his support and fiercely supported an extremist, leading to the Taliban government of the 90s.
The second time was in the 2000s, at the fall of the Taliban government, where the loya jirga, was willing to accept him as King, but the US forced him aside so their candidate Karzai could take power as PM.
My query is, which period could he most realistically return to the throne and exercise authority?
Or is it possible that the coup of 1973 fails?