Isnt a rebellion succesfull when they succeed in their goal?
Yep , in so far as the goal was to get rid of the Shah , but what of all the other goals , the tribalists , the socialists , the nationalists , the seperatists , the secularists ? Only the Sh'ite theocrats got all their goals .
Can i ask you how big are these rebellions becouse i havent seen a single mention about those in press or television.
Well the one in the North West has had pretty much a complete news blackout since Iran moved an extra 12,000 troops in to restore order . Though the cross border shelling did make the news recently .
You must have read about the one in the West that is being blamed on the British and Americans . Some quite nasty bombing there recently .
The one in the North East has had absolutely no coverage since the invasion of Afghanistan .
The one in the South East is getting very nasty , but that has the problem of a news blackout from both sides of the border .

I will see if I can post some links to the revolutionary groups who didn't get what they wanted out of the revolution .
Though come to think of it the US recently released an intelligence assessment on Irans Nuclear program by one of the groups , but they had to use the groups new friendly political name as the normal one is on the proscribed terrorist list and they don't deal with terrorists .
Especially not terrorists who attacked US Embassies and got funded by Saddam

But when ever a rebellion happends usually the strongest party that has most support wins.
Unless it it is the "clever" party that is going to be really ruthless in making sure that it wins . Like in Russia , surely the army/navy parties must have been the strongest , surely the peasant parties must have had most support . But the bolsheivics were damn ruthless in making sure it was their version of revolution that won out .