POK was not taken by any army. It was taken by Kabila Militia after independace. It is difficult to defeat this kabila militia and it was difficult at time of indepenace. We are hearing news from Pakistan.
We have to work together with Pakistan to defeat these militia. Kabila has it's own economical model and army ( sorry they are goons) Nawaz, Musharaf or Bhutto's didn't have power, they are powerless. ISI has complete control or Army and decision making body. They can execute anybody, anywhere in Pak even president. They have done it once ( Zia ul Haq was murdered by ISI). ISI and Kabila militia work hand in hand.