Complex sentence: The Hezb-e-Islami Gulbuddin is the larger of two factions of Afghanistan's Hezbi Islami Party, the other being headed by Mulavi Younas Khalis who split with Hekmatyar and established his own Hezbi Islami in 1979.
Split into simpler sentences: The Hezb-e-Islami Gulbuddin is the larger of two factions of Afghanistan's Hezbi Islami Party. The other faction is headed by Mulavi Younas Khalis who split with Hekmatyar and established his own Hezbi Islami in 1979.