[Htsthbjig]

From your point of view.

From their point of view, they are fighting against a dictator(true) in order to create a regime most of the people there want(a theocracy).

While doing so they oppress other people, like the communist did in the Spanish civil war.

[riffraff]

Or put more simply, they fight for what they think is right, like volunteers did on both sides of the Spanish war.