They've been beheading their enemies and posting the results.
We embedded with the Syrian rebels fighting ISIS.
Business is booming.
Lebanon's religious vigilantes are trapped in ghettos with their guns.
Is Lebanon really on the brink of civil war?
VICE News hangs out with commander Ziad Allouki and his fighters to find out whether Lebanon really is on the brink of civil war.
Kurdish nationalists are fighting jihadist-led rebels for control of northeast Syria.