Complex sentence: His father General Akhtar Abdur Rehman was the Director General of the ISI during the 1980s and played a crucial role in forcing the Soviets out of Afghanistan while his brother Haroon Akhtar Khan is currently serving as Special Assistant to the Prime Minister on Revenue.
Split into simpler sentences: His father General Akhtar Abdur Rehman was the Director General of the ISI during the 1980s and played a crucial role in forcing the Soviets out of Afghanistan. His brother Haroon Akhtar Khan is currently serving as Special Assistant to the Prime Minister on Revenue.