 Although the refugees were controlled within Pakistan's largest province, Balochistan under then-martial law ruler General Rahimuddin Khan, the influx of so many refugees – believed to be the largest refugee population in the world – spread into several other regions.All of this had a heavy impact on Pakistan and its effects continue to this day.Pakistan, through its support for the mujahideen, played a significant role in the eventual withdrawal of Soviet military personnel from Afghanistan.