Complex sentence: Belhadj remained in jail throughout most of the Algerian Civil War that followed, and was released only after serving a 12-year sentence in 2003 under the condition of abstaining from all political activity.
Split into simpler sentences: Belhadj remained in jail throughout most of the Algerian Civil War that followed. He was released only after serving a 12-year sentence in 2003 under the condition of abstaining from all political activity.