sentences:  The party emerged in the early 1990s out of a split in the Hezbe Wahdat leadership between Muhammad Akbari and Abdul Ali Mazari.Tensions between Akbari and Mazari dated back to the Soviet–Afghan War, when Akbari and Mazari had led competing factions within the overarching Tehran Eight Shiite alliance.Akbari had led the Revolutionary Guards, whilst Mazari had led the Nasr Organization.